49400 has 48 divisors (see below), whose sum is σ = 130200. Its totient is φ = 17280.

The previous prime is 49393. The next prime is 49409. The reversal of 49400 is 494.

It is an Ulam number.

It is a nialpdrome in base 15.

It is a zygodrome in base 2.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 49400.

It is not an unprimeable number, because it can be changed into a prime (49409) by changing a digit.

49400 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2591 + ... + 2609.

2⁴⁹⁴⁰⁰ is an apocalyptic number.

49400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65100).

49400 is an abundant number, since it is smaller than the sum of its proper divisors (80800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49400 is a wasteful number, since it uses less digits than its factorization.

49400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48 (or 39 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 49400 is about 222.2611077089. The cubic root of 49400 is about 36.6923603201.

Adding to 49400 its reverse (494), we get a palindrome (49894).

Multiplying 49400 by its reverse (494), we get a square (24403600 = 4940²).

49400 divided by its reverse (494) gives a square (100 = 10²).

It can be divided in two parts, 49 and 400, that multiplied together give a square (19600 = 140²).

The spelling of 49400 in words is "forty-nine thousand, four hundred".