99790212 has 24 divisors (see below), whose sum is σ = 237799296. Its totient is φ = 32555488.

The previous prime is 99790199. The next prime is 99790213. The reversal of 99790212 is 21209799.

It is a happy number.

It is a super-2 number, since 2×99790212² = 19916172822009888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99790213) 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, 87903 + ... + 89030.

It is an arithmetic number, because the mean of its divisors is an integer number (9908304).

Almost surely, 2^99790212 is an apocalyptic number.

It is an amenable number.

99790212 is an abundant number, since it is smaller than the sum of its proper divisors (138009084).

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

99790212 is a wasteful number, since it uses less digits than its factorization.

99790212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176987 (or 176985 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 99790212 is about 9989.5050928462. The cubic root of 99790212 is about 463.8340729047.

The spelling of 99790212 in words is "ninety-nine million, seven hundred ninety thousand, two hundred twelve".