49998631 has 4 divisors (see below), whose sum is σ = 50298192. Its totient is φ = 49699072.

The previous prime is 49998623. The next prime is 49998653. The reversal of 49998631 is 13689994.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 49998631 - 2³ = 49998623 is a prime.

It is a super-2 number, since 2×49998631² = 4999726203748322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 (49998601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149530 + ... + 149863.

It is an arithmetic number, because the mean of its divisors is an integer number (12574548).

Almost surely, 2^49998631 is an apocalyptic number.

49998631 is a deficient number, since it is larger than the sum of its proper divisors (299561).

49998631 is a wasteful number, since it uses less digits than its factorization.

49998631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299560.

The product of its digits is 419904, while the sum is 49.

The square root of 49998631 is about 7070.9710082845. The cubic root of 49998631 is about 368.3997875406.

The spelling of 49998631 in words is "forty-nine million, nine hundred ninety-eight thousand, six hundred thirty-one".