89121312 has 72 divisors (see below), whose sum is σ = 289650816. Its totient is φ = 25462656.

The previous prime is 89121301. The next prime is 89121367. The reversal of 89121312 is 21312198.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20088 + ... + 24119.

It is an arithmetic number, because the mean of its divisors is an integer number (4022928).

Almost surely, 2^89121312 is an apocalyptic number.

It is an amenable number.

89121312 is an abundant number, since it is smaller than the sum of its proper divisors (200529504).

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

89121312 is a wasteful number, since it uses less digits than its factorization.

89121312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44230 (or 44219 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 89121312 is about 9440.4084657392. The cubic root of 89121312 is about 446.6772740730.

The spelling of 89121312 in words is "eighty-nine million, one hundred twenty-one thousand, three hundred twelve".