79859520 has 336 divisors, whose sum is σ = 310652160. Its totient is φ = 19408896.

The previous prime is 79859501. The next prime is 79859539. The reversal of 79859520 is 2595897.

It is a happy number.

79859520 is a `hidden beast` number, since 79 + 8 + 59 + 520 = 666.

It is an interprime number because it is at equal distance from previous prime (79859501) and next prime (79859539).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1010841 + ... + 1010919.

It is an arithmetic number, because the mean of its divisors is an integer number (924560).

Almost surely, 2^79859520 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 79859520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155326080).

79859520 is an abundant number, since it is smaller than the sum of its proper divisors (230792640).

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

79859520 is a wasteful number, since it uses less digits than its factorization.

79859520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The square root of 79859520 is about 8936.4153887339. The cubic root of 79859520 is about 430.6345777461.

The spelling of 79859520 in words is "seventy-nine million, eight hundred fifty-nine thousand, five hundred twenty".