89394177977 has 6 divisors (see below), whose sum is σ = 96799613022. Its totient is φ = 82517702592.

The previous prime is 89394177913. The next prime is 89394178031. The reversal of 89394177977 is 77977149398.

It can be written as a sum of positive squares in 3 ways, for example, as 623550841 + 88770627136 = 24971^2 + 297944^2 .

It is not a de Polignac number, because 89394177977 - 2⁶ = 89394177913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89394177977.

It is not an unprimeable number, because it can be changed into a prime (89394177077) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 264479648 + ... + 264479985.

It is an arithmetic number, because the mean of its divisors is an integer number (16133268837).

Almost surely, 2^89394177977 is an apocalyptic number.

It is an amenable number.

89394177977 is a deficient number, since it is larger than the sum of its proper divisors (7405435045).

89394177977 is a wasteful number, since it uses less digits than its factorization.

89394177977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528959659 (or 528959646 counting only the distinct ones).

The product of its digits is 168031584, while the sum is 71.

The spelling of 89394177977 in words is "eighty-nine billion, three hundred ninety-four million, one hundred seventy-seven thousand, nine hundred seventy-seven".