99447285 has 32 divisors (see below), whose sum is σ = 189757440. Its totient is φ = 43483968.

The previous prime is 99447281. The next prime is 99447301. The reversal of 99447285 is 58274499.

It is not a de Polignac number, because 99447285 - 2² = 99447281 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99447281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18175 + ... + 23004.

It is an arithmetic number, because the mean of its divisors is an integer number (5929920).

Almost surely, 2^99447285 is an apocalyptic number.

It is an amenable number.

99447285 is a deficient number, since it is larger than the sum of its proper divisors (90310155).

99447285 is a wasteful number, since it uses less digits than its factorization.

99447285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41217.

The product of its digits is 725760, while the sum is 48.

The square root of 99447285 is about 9972.3259573682. The cubic root of 99447285 is about 463.3021443848.

The spelling of 99447285 in words is "ninety-nine million, four hundred forty-seven thousand, two hundred eighty-five".