49405857 has 8 divisors (see below), whose sum is σ = 66108384. Its totient is φ = 32820288.

The previous prime is 49405849. The next prime is 49405901. The reversal of 49405857 is 75850494.

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

It is not a de Polignac number, because 49405857 - 2³ = 49405849 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (49405157) 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, 28248 + ... + 29945.

It is an arithmetic number, because the mean of its divisors is an integer number (8263548).

Almost surely, 2^49405857 is an apocalyptic number.

It is an amenable number.

49405857 is a deficient number, since it is larger than the sum of its proper divisors (16702527).

49405857 is a wasteful number, since it uses less digits than its factorization.

49405857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58479.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 49405857 is about 7028.9300039195. The cubic root of 49405857 is about 366.9381037851.

The spelling of 49405857 in words is "forty-nine million, four hundred five thousand, eight hundred fifty-seven".