99629631 has 24 divisors (see below), whose sum is σ = 149241456. Its totient is φ = 63999360.

The previous prime is 99629623. The next prime is 99629633. The reversal of 99629631 is 13692699.

It is a happy number.

99629631 is a `hidden beast` number, since 9 + 9 + 6 + 2 + 9 + 631 = 666.

It is not a de Polignac number, because 99629631 - 2³ = 99629623 is a prime.

It is a super-2 number, since 2×99629631² = 19852126746392322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99629633) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29001 + ... + 32253.

It is an arithmetic number, because the mean of its divisors is an integer number (6218394).

Almost surely, 2^99629631 is an apocalyptic number.

99629631 is a deficient number, since it is larger than the sum of its proper divisors (49611825).

99629631 is a wasteful number, since it uses less digits than its factorization.

99629631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3383 (or 3380 counting only the distinct ones).

The product of its digits is 157464, while the sum is 45.

The square root of 99629631 is about 9981.4643715238. The cubic root of 99629631 is about 463.5851409176.

The spelling of 99629631 in words is "ninety-nine million, six hundred twenty-nine thousand, six hundred thirty-one".