89211975997 has 4 divisors (see below), whose sum is σ = 89245681696. Its totient is φ = 89178270300.

The previous prime is 89211975977. The next prime is 89211976027. The reversal of 89211975997 is 79957911298.

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 89211975997 - 2¹⁹ = 89211451709 is a prime.

It is a super-2 number, since 2×89211975997² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89211975977) 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, 16848879 + ... + 16854172.

It is an arithmetic number, because the mean of its divisors is an integer number (22311420424).

Almost surely, 2^89211975997 is an apocalyptic number.

It is an amenable number.

89211975997 is a deficient number, since it is larger than the sum of its proper divisors (33705699).

89211975997 is a wasteful number, since it uses less digits than its factorization.

89211975997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33705698.

The product of its digits is 25719120, while the sum is 67.

The spelling of 89211975997 in words is "eighty-nine billion, two hundred eleven million, nine hundred seventy-five thousand, nine hundred ninety-seven".