79517412 has 36 divisors (see below), whose sum is σ = 216465340. Its totient is φ = 24466752.

The previous prime is 79517411. The next prime is 79517447. The reversal of 79517412 is 21471597.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8856576 + 70660836 = 2976^2 + 8406^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×79517412² = 12646037622355488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (79517411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84487 + ... + 85422.

Almost surely, 2^79517412 is an apocalyptic number.

It is an amenable number.

79517412 is an abundant number, since it is smaller than the sum of its proper divisors (136947928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79517412 is a wasteful number, since it uses less digits than its factorization.

79517412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169932 (or 169927 counting only the distinct ones).

The product of its digits is 17640, while the sum is 36.

The square root of 79517412 is about 8917.2536130807. The cubic root of 79517412 is about 430.0187696873.

The spelling of 79517412 in words is "seventy-nine million, five hundred seventeen thousand, four hundred twelve".