99638946 has 24 divisors (see below), whose sum is σ = 235510704. Its totient is φ = 30193560.

The previous prime is 99638939. The next prime is 99638969. The reversal of 99638946 is 64983699.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 99638892 and 99638901.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 251416 + ... + 251811.

It is an arithmetic number, because the mean of its divisors is an integer number (9812946).

Almost surely, 2^99638946 is an apocalyptic number.

99638946 is an abundant number, since it is smaller than the sum of its proper divisors (135871758).

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

99638946 is a wasteful number, since it uses less digits than its factorization.

99638946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503246 (or 503243 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 54.

The square root of 99638946 is about 9981.9309755177. The cubic root of 99638946 is about 463.5995882963.

The spelling of 99638946 in words is "ninety-nine million, six hundred thirty-eight thousand, nine hundred forty-six".