99434631 has 4 divisors (see below), whose sum is σ = 132579512. Its totient is φ = 66289752.

The previous prime is 99434617. The next prime is 99434641. The reversal of 99434631 is 13643499.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13643499 = 3 ⋅4547833.

It is not a de Polignac number, because 99434631 - 2⁶ = 99434567 is a prime.

It is a super-2 number, since 2×99434631² = 19774491684212322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99434631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99434611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16572436 + ... + 16572441.

It is an arithmetic number, because the mean of its divisors is an integer number (33144878).

Almost surely, 2^99434631 is an apocalyptic number.

99434631 is a deficient number, since it is larger than the sum of its proper divisors (33144881).

99434631 is a wasteful number, since it uses less digits than its factorization.

99434631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33144880.

The product of its digits is 69984, while the sum is 39.

The square root of 99434631 is about 9971.6914813887. The cubic root of 99434631 is about 463.2824928545.

The spelling of 99434631 in words is "ninety-nine million, four hundred thirty-four thousand, six hundred thirty-one".