89112961 has 4 divisors (see below), whose sum is σ = 101843392. Its totient is φ = 76382532.

The previous prime is 89112943. The next prime is 89112973. The reversal of 89112961 is 16921198.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 89112961 - 2⁹ = 89112449 is a prime.

It is a super-2 number, since 2×89112961² = 15882239636375042, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 89112961.

It is not an unprimeable number, because it can be changed into a prime (89112901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6365205 + ... + 6365218.

It is an arithmetic number, because the mean of its divisors is an integer number (25460848).

Almost surely, 2^89112961 is an apocalyptic number.

It is an amenable number.

89112961 is a deficient number, since it is larger than the sum of its proper divisors (12730431).

89112961 is a wasteful number, since it uses less digits than its factorization.

89112961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12730430.

The product of its digits is 7776, while the sum is 37.

The square root of 89112961 is about 9439.9661546003. The cubic root of 89112961 is about 446.6633218605.

It can be divided in two parts, 89 and 112961, that added together give a triangular number (113050 = T₄₇₅).

The spelling of 89112961 in words is "eighty-nine million, one hundred twelve thousand, nine hundred sixty-one".