99090432 has 160 divisors (see below), whose sum is σ = 335544000. Its totient is φ = 28311552.

The previous prime is 99090427. The next prime is 99090437. The reversal of 99090432 is 23409099.

It is an interprime number because it is at equal distance from previous prime (99090427) and next prime (99090437).

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

It is not an unprimeable number, because it can be changed into a prime (99090437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14155773 + ... + 14155779.

It is an arithmetic number, because the mean of its divisors is an integer number (2097150).

Almost surely, 2^99090432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99090432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167772000).

99090432 is an abundant number, since it is smaller than the sum of its proper divisors (236453568).

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

99090432 is an frugal number, since it uses more digits than its factorization.

99090432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54 (or 12 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 99090432 is about 9954.4177127545. The cubic root of 99090432 is about 462.7473147216.

The spelling of 99090432 in words is "ninety-nine million, ninety thousand, four hundred thirty-two".