8557279497 has 48 divisors (see below), whose sum is σ = 13437418176. Its totient is φ = 5216400000.

The previous prime is 8557279433. The next prime is 8557279501. The reversal of 8557279497 is 7949727558.

8557279497 is a `hidden beast` number, since 8 + 5 + 5 + 72 + 79 + 497 = 666.

It is not a de Polignac number, because 8557279497 - 2⁶ = 8557279433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8557271497) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6195747 + ... + 6197127.

It is an arithmetic number, because the mean of its divisors is an integer number (279946212).

Almost surely, 2^8557279497 is an apocalyptic number.

It is an amenable number.

8557279497 is a deficient number, since it is larger than the sum of its proper divisors (4880138679).

8557279497 is a wasteful number, since it uses less digits than its factorization.

8557279497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1862 (or 1859 counting only the distinct ones).

The product of its digits is 44452800, while the sum is 63.

The square root of 8557279497 is about 92505.5646812666. The cubic root of 8557279497 is about 2045.4015106642.

The spelling of 8557279497 in words is "eight billion, five hundred fifty-seven million, two hundred seventy-nine thousand, four hundred ninety-seven".