49999631 has 16 divisors (see below), whose sum is σ = 57231360. Its totient is φ = 43237920.

The previous prime is 49999627. The next prime is 49999637. The reversal of 49999631 is 13699994.

It is a happy number.

It is not a de Polignac number, because 49999631 - 2² = 49999627 is a prime.

It is a super-2 number, since 2×49999631² = 4999926200272322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 49999631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49999637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57506 + ... + 58368.

It is an arithmetic number, because the mean of its divisors is an integer number (3576960).

Almost surely, 2^49999631 is an apocalyptic number.

49999631 is a deficient number, since it is larger than the sum of its proper divisors (7231729).

49999631 is a wasteful number, since it uses less digits than its factorization.

49999631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126.

The product of its digits is 472392, while the sum is 50.

The square root of 49999631 is about 7071.0417195771. The cubic root of 49999631 is about 368.4022435901.

The spelling of 49999631 in words is "forty-nine million, nine hundred ninety-nine thousand, six hundred thirty-one".