79442679 has 8 divisors (see below), whose sum is σ = 107660272. Its totient is φ = 52093440.

The previous prime is 79442669. The next prime is 79442689. The reversal of 79442679 is 97624497.

It is an interprime number because it is at equal distance from previous prime (79442669) and next prime (79442689).

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

It is not a de Polignac number, because 79442679 - 2⁵ = 79442647 is a prime.

It is a super-2 number, since 2×79442679² = 12622278493394082, 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 (79442609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216874 + ... + 217239.

It is an arithmetic number, because the mean of its divisors is an integer number (13457534).

Almost surely, 2^79442679 is an apocalyptic number.

79442679 is a deficient number, since it is larger than the sum of its proper divisors (28217593).

79442679 is a wasteful number, since it uses less digits than its factorization.

79442679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434177.

The product of its digits is 762048, while the sum is 48.

The square root of 79442679 is about 8913.0622683789. The cubic root of 79442679 is about 429.8840123436.

The spelling of 79442679 in words is "seventy-nine million, four hundred forty-two thousand, six hundred seventy-nine".