79859040 has 96 divisors (see below), whose sum is σ = 260275680. Its totient is φ = 20557824.

The previous prime is 79859027. The next prime is 79859051. The reversal of 79859040 is 4095897.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 79858983 and 79859001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11052 + ... + 16788.

It is an arithmetic number, because the mean of its divisors is an integer number (2711205).

Almost surely, 2^79859040 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 79859040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130137840).

79859040 is an abundant number, since it is smaller than the sum of its proper divisors (180416640).

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

79859040 is a wasteful number, since it uses less digits than its factorization.

79859040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5784 (or 5776 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 79859040 is about 8936.3885322875. The cubic root of 79859040 is about 430.6337149602.

The spelling of 79859040 in words is "seventy-nine million, eight hundred fifty-nine thousand, forty".