99405432 has 48 divisors (see below), whose sum is σ = 307685040. Its totient is φ = 28401408.

The previous prime is 99405431. The next prime is 99405451. The reversal of 99405432 is 23450499.

It is a super-2 number, since 2×99405432² = 19762879822213248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99405431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98113 + ... + 99120.

It is an arithmetic number, because the mean of its divisors is an integer number (6410105).

Almost surely, 2^99405432 is an apocalyptic number.

It is an amenable number.

99405432 is an abundant number, since it is smaller than the sum of its proper divisors (208279608).

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

99405432 is a wasteful number, since it uses less digits than its factorization.

99405432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197252 (or 197245 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 99405432 is about 9970.2272792550. The cubic root of 99405432 is about 463.2371407483.

The spelling of 99405432 in words is "ninety-nine million, four hundred five thousand, four hundred thirty-two".