99144372 has 12 divisors (see below), whose sum is σ = 231336896. Its totient is φ = 33048120.

The previous prime is 99144361. The next prime is 99144373. The reversal of 99144372 is 27344199.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 99144372.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99144373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4131004 + ... + 4131027.

Almost surely, 2^99144372 is an apocalyptic number.

It is an amenable number.

99144372 is an abundant number, since it is smaller than the sum of its proper divisors (132192524).

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

99144372 is a wasteful number, since it uses less digits than its factorization.

99144372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8262038 (or 8262036 counting only the distinct ones).

The product of its digits is 54432, while the sum is 39.

The square root of 99144372 is about 9957.1266939816. The cubic root of 99144372 is about 462.8312651829.

The spelling of 99144372 in words is "ninety-nine million, one hundred forty-four thousand, three hundred seventy-two".