79304609 has 4 divisors (see below), whose sum is σ = 83969604. Its totient is φ = 74639616.

The previous prime is 79304593. The next prime is 79304623. The reversal of 79304609 is 90640397.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90640397 = 383 ⋅236659.

It can be written as a sum of positive squares in 2 ways, for example, as 72165025 + 7139584 = 8495^2 + 2672^2 .

It is a cyclic number.

It is not a de Polignac number, because 79304609 - 2⁴ = 79304593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79304629) 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, 2332472 + ... + 2332505.

It is an arithmetic number, because the mean of its divisors is an integer number (20992401).

Almost surely, 2^79304609 is an apocalyptic number.

It is an amenable number.

79304609 is a deficient number, since it is larger than the sum of its proper divisors (4664995).

79304609 is a wasteful number, since it uses less digits than its factorization.

79304609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4664994.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 79304609 is about 8905.3135262045. The cubic root of 79304609 is about 429.6348242706.

The spelling of 79304609 in words is "seventy-nine million, three hundred four thousand, six hundred nine".