99431448 has 32 divisors (see below), whose sum is σ = 249687360. Its totient is φ = 32996000.

The previous prime is 99431447. The next prime is 99431471. The reversal of 99431448 is 84413499.

It is a super-2 number, since 2×99431448² = 19773225702753408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99431443) 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 7 ways as a sum of consecutive naturals, for example, 3678 + ... + 14573.

It is an arithmetic number, because the mean of its divisors is an integer number (7802730).

Almost surely, 2^99431448 is an apocalyptic number.

It is an amenable number.

99431448 is an abundant number, since it is smaller than the sum of its proper divisors (150255912).

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

99431448 is a wasteful number, since it uses less digits than its factorization.

99431448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18487 (or 18483 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 99431448 is about 9971.5318783024. The cubic root of 99431448 is about 463.2775494262.

The spelling of 99431448 in words is "ninety-nine million, four hundred thirty-one thousand, four hundred forty-eight".