79891056 has 160 divisors (see below), whose sum is σ = 271411200. Its totient is φ = 22014720.

The previous prime is 79891051. The next prime is 79891057. The reversal of 79891056 is 65019897.

It is a super-3 number, since 3×79891056³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79891051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87241 + ... + 88151.

It is an arithmetic number, because the mean of its divisors is an integer number (1696320).

Almost surely, 2^79891056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79891056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135705600).

79891056 is an abundant number, since it is smaller than the sum of its proper divisors (191520144).

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

79891056 is a wasteful number, since it uses less digits than its factorization.

79891056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964 (or 952 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 79891056 is about 8938.1796804495. The cubic root of 79891056 is about 430.6912552085.

It can be divided in two parts, 7989 and 1056, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 79891056 in words is "seventy-nine million, eight hundred ninety-one thousand, fifty-six".