99630138 has 16 divisors (see below), whose sum is σ = 206131680. Its totient is φ = 32064816.

The previous prime is 99630127. The next prime is 99630143. The reversal of 99630138 is 83103699.

It is a junction number, because it is equal to n+sod(n) for n = 99630096 and 99630105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286120 + ... + 286467.

It is an arithmetic number, because the mean of its divisors is an integer number (12883230).

Almost surely, 2^99630138 is an apocalyptic number.

99630138 is an abundant number, since it is smaller than the sum of its proper divisors (106501542).

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

99630138 is a wasteful number, since it uses less digits than its factorization.

99630138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572621.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 99630138 is about 9981.4897685666. The cubic root of 99630138 is about 463.5859272876.

The spelling of 99630138 in words is "ninety-nine million, six hundred thirty thousand, one hundred thirty-eight".