79220776 has 8 divisors (see below), whose sum is σ = 148538970. Its totient is φ = 39610384.

The previous prime is 79220759. The next prime is 79220789. The reversal of 79220776 is 67702297.

It can be written as a sum of positive squares in only one way, i.e., 77898276 + 1322500 = 8826^2 + 1150^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4951291 + ... + 4951306.

Almost surely, 2^79220776 is an apocalyptic number.

It is an amenable number.

79220776 is a deficient number, since it is larger than the sum of its proper divisors (69318194).

79220776 is a wasteful number, since it uses less digits than its factorization.

79220776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9902603 (or 9902599 counting only the distinct ones).

The product of its (nonzero) digits is 74088, while the sum is 40.

The square root of 79220776 is about 8900.6053726699. The cubic root of 79220776 is about 429.4833817272.

The spelling of 79220776 in words is "seventy-nine million, two hundred twenty thousand, seven hundred seventy-six".