89900121 has 16 divisors (see below), whose sum is σ = 123393600. Its totient is φ = 58177728.

The previous prime is 89900101. The next prime is 89900141. The reversal of 89900121 is 12100998.

It is an interprime number because it is at equal distance from previous prime (89900101) and next prime (89900141).

It is not a de Polignac number, because 89900121 - 2¹⁰ = 89899097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89900101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72535 + ... + 73763.

It is an arithmetic number, because the mean of its divisors is an integer number (7712100).

Almost surely, 2^89900121 is an apocalyptic number.

It is an amenable number.

89900121 is a deficient number, since it is larger than the sum of its proper divisors (33493479).

89900121 is a wasteful number, since it uses less digits than its factorization.

89900121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1928.

The product of its (nonzero) digits is 1296, while the sum is 30.

The square root of 89900121 is about 9481.5674337105. The cubic root of 89900121 is about 447.9746361730.

The spelling of 89900121 in words is "eighty-nine million, nine hundred thousand, one hundred twenty-one".