99521946 has 20 divisors (see below), whose sum is σ = 223003242. Its totient is φ = 33173928.

The previous prime is 99521911. The next prime is 99521953. The reversal of 99521946 is 64912599.

It can be written as a sum of positive squares in only one way, i.e., 56475225 + 43046721 = 7515^2 + 6561^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 307005 + ... + 307328.

Almost surely, 2^99521946 is an apocalyptic number.

99521946 is an abundant number, since it is smaller than the sum of its proper divisors (123481296).

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

99521946 is a wasteful number, since it uses less digits than its factorization.

99521946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614347 (or 614338 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 99521946 is about 9976.0686645592. The cubic root of 99521946 is about 463.4180582200.

The spelling of 99521946 in words is "ninety-nine million, five hundred twenty-one thousand, nine hundred forty-six".