79416578 has 16 divisors (see below), whose sum is σ = 124659000. Its totient is φ = 37904256.

The previous prime is 79416563. The next prime is 79416581. The reversal of 79416578 is 87561497.

It can be written as a sum of positive squares in 4 ways, for example, as 77492809 + 1923769 = 8803^2 + 1387^2 .

It is a super-2 number, since 2×79416578² = 12613985722460168, which contains 22 as substring.

It is an unprimeable number.

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, 6203 + ... + 14046.

Almost surely, 2^79416578 is an apocalyptic number.

79416578 is a deficient number, since it is larger than the sum of its proper divisors (45242422).

79416578 is a wasteful number, since it uses less digits than its factorization.

79416578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20341.

The product of its digits is 423360, while the sum is 47.

The square root of 79416578 is about 8911.5979487407. The cubic root of 79416578 is about 429.8369275281.

The spelling of 79416578 in words is "seventy-nine million, four hundred sixteen thousand, five hundred seventy-eight".