89920961 has 8 divisors (see below), whose sum is σ = 101048640. Its totient is φ = 79394832.

The previous prime is 89920949. The next prime is 89920997. The reversal of 89920961 is 16902998.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 89920961 - 2²² = 85726657 is a prime.

It is a super-3 number, since 3×89920961³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89926961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150071 + ... + 150668.

It is an arithmetic number, because the mean of its divisors is an integer number (12631080).

Almost surely, 2^89920961 is an apocalyptic number.

It is an amenable number.

89920961 is a deficient number, since it is larger than the sum of its proper divisors (11127679).

89920961 is a wasteful number, since it uses less digits than its factorization.

89920961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300775.

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 89920961 is about 9482.6663444413. Note that the first 3 decimals coincide. The cubic root of 89920961 is about 448.0092489189.

The spelling of 89920961 in words is "eighty-nine million, nine hundred twenty thousand, nine hundred sixty-one".