79204669 has 4 divisors (see below), whose sum is σ = 79454844. Its totient is φ = 78954496.

The previous prime is 79204651. The next prime is 79204681. The reversal of 79204669 is 96640297.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96640297 = 13 ⋅7433869.

It can be written as a sum of positive squares in 2 ways, for example, as 27436644 + 51768025 = 5238^2 + 7195^2 .

It is a cyclic number.

It is not a de Polignac number, because 79204669 - 2¹⁷ = 79073597 is a prime.

It is a super-2 number, since 2×79204669² = 12546759182799122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79208669) 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, 124612 + ... + 125245.

It is an arithmetic number, because the mean of its divisors is an integer number (19863711).

Almost surely, 2^79204669 is an apocalyptic number.

It is an amenable number.

79204669 is a deficient number, since it is larger than the sum of its proper divisors (250175).

79204669 is a wasteful number, since it uses less digits than its factorization.

79204669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250174.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 79204669 is about 8899.7005005787. The cubic root of 79204669 is about 429.4542725378.

The spelling of 79204669 in words is "seventy-nine million, two hundred four thousand, six hundred sixty-nine".