99439944 has 16 divisors (see below), whose sum is σ = 248599920. Its totient is φ = 33146640.

The previous prime is 99439933. The next prime is 99439961. The reversal of 99439944 is 44993499.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2071642 + ... + 2071689.

It is an arithmetic number, because the mean of its divisors is an integer number (15537495).

Almost surely, 2^99439944 is an apocalyptic number.

It is an amenable number.

99439944 is an abundant number, since it is smaller than the sum of its proper divisors (149159976).

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

99439944 is a wasteful number, since it uses less digits than its factorization.

99439944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4143340 (or 4143336 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 51.

The square root of 99439944 is about 9971.9578819809. The cubic root of 99439944 is about 463.2907440913.

The spelling of 99439944 in words is "ninety-nine million, four hundred thirty-nine thousand, nine hundred forty-four".