49057639 has 8 divisors (see below), whose sum is σ = 51704240. Its totient is φ = 46417536.

The previous prime is 49057627. The next prime is 49057661. The reversal of 49057639 is 93675094.

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

It is a cyclic number.

It is not a de Polignac number, because 49057639 - 2⁷ = 49057511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49057595 and 49057604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49057609) 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, 26719 + ... + 28495.

It is an arithmetic number, because the mean of its divisors is an integer number (6463030).

Almost surely, 2^49057639 is an apocalyptic number.

49057639 is a deficient number, since it is larger than the sum of its proper divisors (2646601).

49057639 is a wasteful number, since it uses less digits than its factorization.

49057639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3249.

The product of its (nonzero) digits is 204120, while the sum is 43.

The square root of 49057639 is about 7004.1158614061. The cubic root of 49057639 is about 366.0739969031.

It can be divided in two parts, 4905 and 7639, that added together give a square (12544 = 112²).

The spelling of 49057639 in words is "forty-nine million, fifty-seven thousand, six hundred thirty-nine".