79736477 has 4 divisors (see below), whose sum is σ = 84426876. Its totient is φ = 75046080.

The previous prime is 79736441. The next prime is 79736533. The reversal of 79736477 is 77463797.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77463797 = 211 ⋅367127.

It can be written as a sum of positive squares in 2 ways, for example, as 63904036 + 15832441 = 7994^2 + 3979^2 .

It is a cyclic number.

It is not a de Polignac number, because 79736477 - 2¹² = 79732381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79736417) 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, 2345174 + ... + 2345207.

It is an arithmetic number, because the mean of its divisors is an integer number (21106719).

Almost surely, 2^79736477 is an apocalyptic number.

It is an amenable number.

79736477 is a deficient number, since it is larger than the sum of its proper divisors (4690399).

79736477 is a wasteful number, since it uses less digits than its factorization.

79736477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4690398.

The product of its digits is 1555848, while the sum is 50.

The square root of 79736477 is about 8929.5283750039. The cubic root of 79736477 is about 430.4132983187.

The spelling of 79736477 in words is "seventy-nine million, seven hundred thirty-six thousand, four hundred seventy-seven".