79895977 has 4 divisors (see below), whose sum is σ = 91309696. Its totient is φ = 68482260.

The previous prime is 79895953. The next prime is 79895993. The reversal of 79895977 is 77959897.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-79895977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79895927) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5706849 + ... + 5706862.

It is an arithmetic number, because the mean of its divisors is an integer number (22827424).

Almost surely, 2^79895977 is an apocalyptic number.

It is an amenable number.

79895977 is a deficient number, since it is larger than the sum of its proper divisors (11413719).

79895977 is a wasteful number, since it uses less digits than its factorization.

79895977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11413718.

The product of its digits is 10001880, while the sum is 61.

The square root of 79895977 is about 8938.4549559753. The cubic root of 79895977 is about 430.7000980346.

The spelling of 79895977 in words is "seventy-nine million, eight hundred ninety-five thousand, nine hundred seventy-seven".