89921611 has 4 divisors (see below), whose sum is σ = 96838672. Its totient is φ = 83004552.

The previous prime is 89921609. The next prime is 89921633. The reversal of 89921611 is 11612998.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 89921611 - 2¹ = 89921609 is a prime.

It is a super-2 number, since 2×89921611² = 16171792249670642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89921641) 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, 3458511 + ... + 3458536.

It is an arithmetic number, because the mean of its divisors is an integer number (24209668).

Almost surely, 2^89921611 is an apocalyptic number.

89921611 is a deficient number, since it is larger than the sum of its proper divisors (6917061).

89921611 is a wasteful number, since it uses less digits than its factorization.

89921611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6917060.

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

The square root of 89921611 is about 9482.7006174402. The cubic root of 89921611 is about 448.0103284051.

The spelling of 89921611 in words is "eighty-nine million, nine hundred twenty-one thousand, six hundred eleven".