99432 has 24 divisors (see below), whose sum is σ = 269490. Its totient is φ = 33120.

The previous prime is 99431. The next prime is 99439. The reversal of 99432 is 23499.

It can be written as a sum of positive squares in only one way, i.e., 86436 + 12996 = 294^2 + 114^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 99396 and 99405.

It is not an unprimeable number, because it can be changed into a prime (99431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 619 + ... + 762.

2⁹⁹⁴³² is an apocalyptic number.

It is an amenable number.

99432 is an abundant number, since it is smaller than the sum of its proper divisors (170058).

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

99432 is a wasteful number, since it uses less digits than its factorization.

99432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393 (or 1386 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 99432 is about 315.3284002433. The cubic root of 99432 is about 46.3278406730.

The spelling of 99432 in words is "ninety-nine thousand, four hundred thirty-two".