79788776 has 8 divisors (see below), whose sum is σ = 149603970. Its totient is φ = 39894384.

The previous prime is 79788739. The next prime is 79788791. The reversal of 79788776 is 67788797.

It can be written as a sum of positive squares in only one way, i.e., 77616100 + 2172676 = 8810^2 + 1474^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 4986791 + ... + 4986806.

Almost surely, 2^79788776 is an apocalyptic number.

It is an amenable number.

79788776 is a deficient number, since it is larger than the sum of its proper divisors (69815194).

79788776 is a wasteful number, since it uses less digits than its factorization.

79788776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9973603 (or 9973599 counting only the distinct ones).

The product of its digits is 8297856, while the sum is 59.

The square root of 79788776 is about 8932.4563251101. The cubic root of 79788776 is about 430.5073801671.

The spelling of 79788776 in words is "seventy-nine million, seven hundred eighty-eight thousand, seven hundred seventy-six".