99375440 has 20 divisors (see below), whose sum is σ = 231048084. Its totient is φ = 39750144.

The previous prime is 99375439. The next prime is 99375449. The reversal of 99375440 is 4457399.

It can be written as a sum of positive squares in 2 ways, for example, as 61528336 + 37847104 = 7844^2 + 6152^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99375449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 621017 + ... + 621176.

Almost surely, 2^99375440 is an apocalyptic number.

It is an amenable number.

99375440 is an abundant number, since it is smaller than the sum of its proper divisors (131672644).

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

99375440 is a wasteful number, since it uses less digits than its factorization.

99375440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242206 (or 1242200 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 99375440 is about 9968.7230877380. The cubic root of 99375440 is about 463.1905477015.

The spelling of 99375440 in words is "ninety-nine million, three hundred seventy-five thousand, four hundred forty".