99440392 has 8 divisors (see below), whose sum is σ = 186450750. Its totient is φ = 49720192.

The previous prime is 99440389. The next prime is 99440401. The reversal of 99440392 is 29304499.

It can be written as a sum of positive squares in only one way, i.e., 79673476 + 19766916 = 8926^2 + 4446^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×99440392² = 19776783122227328, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6215017 + ... + 6215032.

Almost surely, 2^99440392 is an apocalyptic number.

It is an amenable number.

99440392 is a deficient number, since it is larger than the sum of its proper divisors (87010358).

99440392 is a wasteful number, since it uses less digits than its factorization.

99440392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12430055 (or 12430051 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 99440392 is about 9971.9803449465. The cubic root of 99440392 is about 463.2914398343.

The spelling of 99440392 in words is "ninety-nine million, four hundred forty thousand, three hundred ninety-two".