49490040 has 64 divisors (see below), whose sum is σ = 149052960. Its totient is φ = 13145600.

The previous prime is 49490039. The next prime is 49490047. The reversal of 49490040 is 4009494.

49490040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49490047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37390 + ... + 38690.

Almost surely, 2^49490040 is an apocalyptic number.

49490040 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 49490040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74526480).

49490040 is an abundant number, since it is smaller than the sum of its proper divisors (99562920).

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

49490040 is a wasteful number, since it uses less digits than its factorization.

49490040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632 (or 1628 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 49490040 is about 7034.9157777474. The cubic root of 49490040 is about 367.1463950305.

The spelling of 49490040 in words is "forty-nine million, four hundred ninety thousand, forty".