79073969 has 4 divisors (see below), whose sum is σ = 85156596. Its totient is φ = 72991344.

The previous prime is 79073959. The next prime is 79073971. The reversal of 79073969 is 96937097.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25959025 + 53114944 = 5095^2 + 7288^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79073969 is a prime.

It is a super-2 number, since 2×79073969² = 12505385146825922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79073959) 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, 3041294 + ... + 3041319.

It is an arithmetic number, because the mean of its divisors is an integer number (21289149).

Almost surely, 2^79073969 is an apocalyptic number.

It is an amenable number.

79073969 is a deficient number, since it is larger than the sum of its proper divisors (6082627).

79073969 is a wasteful number, since it uses less digits than its factorization.

79073969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6082626.

The product of its (nonzero) digits is 642978, while the sum is 50.

The square root of 79073969 is about 8892.3545250963. The cubic root of 79073969 is about 429.2179204107.

The spelling of 79073969 in words is "seventy-nine million, seventy-three thousand, nine hundred sixty-nine".