79650977 has 4 divisors (see below), whose sum is σ = 91029696. Its totient is φ = 68272260.

The previous prime is 79650959. The next prime is 79650979. The reversal of 79650977 is 77905697.

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, and also an emirpimes, since its reverse is a distinct semiprime: 77905697 = 31 ⋅2513087.

It is not a de Polignac number, because 79650977 - 2⁶ = 79650913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79650979) 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, 5689349 + ... + 5689362.

It is an arithmetic number, because the mean of its divisors is an integer number (22757424).

Almost surely, 2^79650977 is an apocalyptic number.

It is an amenable number.

79650977 is a deficient number, since it is larger than the sum of its proper divisors (11378719).

79650977 is a wasteful number, since it uses less digits than its factorization.

79650977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11378718.

The product of its (nonzero) digits is 833490, while the sum is 50.

The square root of 79650977 is about 8924.7396040445. The cubic root of 79650977 is about 430.2594018016.

The spelling of 79650977 in words is "seventy-nine million, six hundred fifty thousand, nine hundred seventy-seven".