99979236 has 72 divisors (see below), whose sum is σ = 291467904. Its totient is φ = 28304640.

The previous prime is 99979223. The next prime is 99979249. The reversal of 99979236 is 63297999.

It is an interprime number because it is at equal distance from previous prime (99979223) and next prime (99979249).

It is a super-2 number, since 2×99979236² = 19991695262287392, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26721 + ... + 30231.

Almost surely, 2^99979236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99979236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145733952).

99979236 is an abundant number, since it is smaller than the sum of its proper divisors (191488668).

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

99979236 is a wasteful number, since it uses less digits than its factorization.

99979236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3641 (or 3636 counting only the distinct ones).

The product of its digits is 1653372, while the sum is 54.

The square root of 99979236 is about 9998.9617461014. The cubic root of 99979236 is about 464.1267551540.

The spelling of 99979236 in words is "ninety-nine million, nine hundred seventy-nine thousand, two hundred thirty-six".