90477299977 has 4 divisors (see below), whose sum is σ = 90702929556. Its totient is φ = 90251670400.

The previous prime is 90477299971. The next prime is 90477299987. The reversal of 90477299977 is 77999277409.

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

It can be written as a sum of positive squares in 2 ways, for example, as 76642600336 + 13834699641 = 276844^2 + 117621^2 .

It is a cyclic number.

It is not a de Polignac number, because 90477299977 - 2¹⁹ = 90476775689 is a prime.

It is a super-2 number, since 2×90477299977² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90477299971) 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, 112814188 + ... + 112814989.

It is an arithmetic number, because the mean of its divisors is an integer number (22675732389).

Almost surely, 2^90477299977 is an apocalyptic number.

It is an amenable number.

90477299977 is a deficient number, since it is larger than the sum of its proper divisors (225629579).

90477299977 is a wasteful number, since it uses less digits than its factorization.

90477299977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225629578.

The product of its (nonzero) digits is 126023688, while the sum is 70.

The spelling of 90477299977 in words is "ninety billion, four hundred seventy-seven million, two hundred ninety-nine thousand, nine hundred seventy-seven".