99639413224 has 16 divisors (see below), whose sum is σ = 201194969220. Its totient is φ = 45987421440.

The previous prime is 99639413119. The next prime is 99639413227. The reversal of 99639413224 is 42231493699.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 98740492900 + 898920324 = 314230^2 + 29982^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (99639413227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479035537 + ... + 479035744.

Almost surely, 2^99639413224 is an apocalyptic number.

It is an amenable number.

99639413224 is an abundant number, since it is smaller than the sum of its proper divisors (101555555996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99639413224 is a wasteful number, since it uses less digits than its factorization.

99639413224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958071300 (or 958071296 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 52.

The spelling of 99639413224 in words is "ninety-nine billion, six hundred thirty-nine million, four hundred thirteen thousand, two hundred twenty-four".