89797807977 has 4 divisors (see below), whose sum is σ = 119730410640. Its totient is φ = 59865205316.

The previous prime is 89797807969. The next prime is 89797807991. The reversal of 89797807977 is 77970879798.

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 89797807977 - 2³ = 89797807969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89797807777) 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, 14966301327 + ... + 14966301332.

It is an arithmetic number, because the mean of its divisors is an integer number (29932602660).

Almost surely, 2^89797807977 is an apocalyptic number.

It is an amenable number.

89797807977 is a deficient number, since it is larger than the sum of its proper divisors (29932602663).

89797807977 is a wasteful number, since it uses less digits than its factorization.

89797807977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29932602662.

The product of its (nonzero) digits is 784147392, while the sum is 78.

The spelling of 89797807977 in words is "eighty-nine billion, seven hundred ninety-seven million, eight hundred seven thousand, nine hundred seventy-seven".