49405 has 8 divisors (see below), whose sum is σ = 60984. Its totient is φ = 38400.

The previous prime is 49393. The next prime is 49409. The reversal of 49405 is 50494.

It can be written as a sum of positive squares in 4 ways, for example, as 1444 + 47961 = 38^2 + 219^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 49405 - 2⁷ = 49277 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85 + ... + 325.

It is an arithmetic number, because the mean of its divisors is an integer number (7623).

2⁴⁹⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

49405 is a deficient number, since it is larger than the sum of its proper divisors (11579).

49405 is a wasteful number, since it uses less digits than its factorization.

49405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 49405 is about 222.2723554561. The cubic root of 49405 is about 36.6935982122.

Adding to 49405 its reverse (50494), we get a palindrome (99899).

Subtracting 49405 from its reverse (50494), we obtain a square (1089 = 33²).

It can be divided in two parts, 49 and 405, that added together give a palindrome (454).

The spelling of 49405 in words is "forty-nine thousand, four hundred five".