79874451 has 16 divisors (see below), whose sum is σ = 119833600. Its totient is φ = 52574184.

The previous prime is 79874447. The next prime is 79874477. The reversal of 79874451 is 15447897.

It is a happy number.

It is not a de Polignac number, because 79874451 - 2² = 79874447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79874397 and 79874406.

It is not an unprimeable number, because it can be changed into a prime (79874051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16591 + ... + 20856.

It is an arithmetic number, because the mean of its divisors is an integer number (7489600).

Almost surely, 2^79874451 is an apocalyptic number.

79874451 is a deficient number, since it is larger than the sum of its proper divisors (39959149).

79874451 is a wasteful number, since it uses less digits than its factorization.

79874451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37535 (or 37529 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 79874451 is about 8937.2507517692. The cubic root of 79874451 is about 430.6614140548.

The spelling of 79874451 in words is "seventy-nine million, eight hundred seventy-four thousand, four hundred fifty-one".