79442447 has 8 divisors (see below), whose sum is σ = 90907776. Its totient is φ = 68006232.

The previous prime is 79442443. The next prime is 79442501. The reversal of 79442447 is 74424497.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 79442447 - 2² = 79442443 is a prime.

It is a super-2 number, since 2×79442447² = 12622204770695618, 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 (79442443) 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 7 ways as a sum of consecutive naturals, for example, 1073 + ... + 12650.

It is an arithmetic number, because the mean of its divisors is an integer number (11363472).

Almost surely, 2^79442447 is an apocalyptic number.

79442447 is a deficient number, since it is larger than the sum of its proper divisors (11465329).

79442447 is a wasteful number, since it uses less digits than its factorization.

79442447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14557.

The product of its digits is 225792, while the sum is 41.

The square root of 79442447 is about 8913.0492537627. The cubic root of 79442447 is about 429.8835938734.

The spelling of 79442447 in words is "seventy-nine million, four hundred forty-two thousand, four hundred forty-seven".