99745432 has 16 divisors (see below), whose sum is σ = 187293600. Its totient is φ = 49800480.

The previous prime is 99745381. The next prime is 99745433. The reversal of 99745432 is 23454799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99745433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2919 + ... + 14422.

It is an arithmetic number, because the mean of its divisors is an integer number (11705850).

Almost surely, 2^99745432 is an apocalyptic number.

It is an amenable number.

99745432 is a deficient number, since it is larger than the sum of its proper divisors (87548168).

99745432 is a wasteful number, since it uses less digits than its factorization.

99745432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18066 (or 18062 counting only the distinct ones).

The product of its digits is 272160, while the sum is 43.

The square root of 99745432 is about 9987.2634890645. The cubic root of 99745432 is about 463.7646820062.

It can be divided in two parts, 9974543 and 2, that multiplied together give a triangular number (19949086 = T₆₃₁₆).

The spelling of 99745432 in words is "ninety-nine million, seven hundred forty-five thousand, four hundred thirty-two".