89979912 has 192 divisors, whose sum is σ = 290122560. Its totient is φ = 24883200.

The previous prime is 89979907. The next prime is 89979913. The reversal of 89979912 is 21997998.

It is not an unprimeable number, because it can be changed into a prime (89979913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 551943 + ... + 552105.

It is an arithmetic number, because the mean of its divisors is an integer number (1511055).

Almost surely, 2^89979912 is an apocalyptic number.

89979912 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89979912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145061280).

89979912 is an abundant number, since it is smaller than the sum of its proper divisors (200142648).

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

89979912 is a wasteful number, since it uses less digits than its factorization.

89979912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 237 counting only the distinct ones).

The product of its digits is 734832, while the sum is 54.

The square root of 89979912 is about 9485.7741908608. The cubic root of 89979912 is about 448.1071305235.

It can be divided in two parts, 899799 and 12, that added together give a triangular number (899811 = T₁₃₄₁).

The spelling of 89979912 in words is "eighty-nine million, nine hundred seventy-nine thousand, nine hundred twelve".