79777485 has 24 divisors (see below), whose sum is σ = 145560480. Its totient is φ = 40308192.

The previous prime is 79777469. The next prime is 79777493. The reversal of 79777485 is 58477797.

79777485 is a `hidden beast` number, since 7 + 97 + 77 + 485 = 666.

It is not a de Polignac number, because 79777485 - 2⁴ = 79777469 is a prime.

It is a super-2 number, since 2×79777485² = 12728894225850450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45799 + ... + 47508.

It is an arithmetic number, because the mean of its divisors is an integer number (6065020).

Almost surely, 2^79777485 is an apocalyptic number.

It is an amenable number.

79777485 is a deficient number, since it is larger than the sum of its proper divisors (65782995).

79777485 is a wasteful number, since it uses less digits than its factorization.

79777485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93337 (or 93334 counting only the distinct ones).

The product of its digits is 3457440, while the sum is 54.

The square root of 79777485 is about 8931.8242817467. The cubic root of 79777485 is about 430.4870720136.

The spelling of 79777485 in words is "seventy-nine million, seven hundred seventy-seven thousand, four hundred eighty-five".