49957889 has 4 divisors (see below), whose sum is σ = 49973424. Its totient is φ = 49942356.

The previous prime is 49957867. The next prime is 49957907. The reversal of 49957889 is 98875994.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 49957889 - 2²⁰ = 48909313 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (49957819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 947 + ... + 10040.

It is an arithmetic number, because the mean of its divisors is an integer number (12493356).

Almost surely, 2^49957889 is an apocalyptic number.

It is an amenable number.

49957889 is a deficient number, since it is larger than the sum of its proper divisors (15535).

49957889 is a wasteful number, since it uses less digits than its factorization.

49957889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15534.

The product of its digits is 6531840, while the sum is 59.

The square root of 49957889 is about 7068.0894872660. The cubic root of 49957889 is about 368.2996953145.

The spelling of 49957889 in words is "forty-nine million, nine hundred fifty-seven thousand, eight hundred eighty-nine".