99229440 has 72 divisors (see below), whose sum is σ = 316926288. Its totient is φ = 26460160.

The previous prime is 99229439. The next prime is 99229441. The reversal of 99229440 is 4492299.

It is an interprime number because it is at equal distance from previous prime (99229439) and next prime (99229441).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99229441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9081 + ... + 16760.

It is an arithmetic number, because the mean of its divisors is an integer number (4401754).

Almost surely, 2^99229440 is an apocalyptic number.

It is an amenable number.

99229440 is an abundant number, since it is smaller than the sum of its proper divisors (217696848).

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

99229440 is a wasteful number, since it uses less digits than its factorization.

99229440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25865 (or 25851 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 99229440 is about 9961.3974923200. The cubic root of 99229440 is about 462.9636003958.

The spelling of 99229440 in words is "ninety-nine million, two hundred twenty-nine thousand, four hundred forty".