99072212 has 6 divisors (see below), whose sum is σ = 173376378. Its totient is φ = 49536104.

The previous prime is 99072179. The next prime is 99072217. The reversal of 99072212 is 21227099.

It can be written as a sum of positive squares in only one way, i.e., 62663056 + 36409156 = 7916^2 + 6034^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99072217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12384023 + ... + 12384030.

It is an arithmetic number, because the mean of its divisors is an integer number (28896063).

Almost surely, 2^99072212 is an apocalyptic number.

It is an amenable number.

99072212 is a deficient number, since it is larger than the sum of its proper divisors (74304166).

99072212 is a wasteful number, since it uses less digits than its factorization.

99072212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24768057 (or 24768055 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 99072212 is about 9953.5024991206. The cubic root of 99072212 is about 462.7189508231.

The spelling of 99072212 in words is "ninety-nine million, seventy-two thousand, two hundred twelve".