79861408 has 48 divisors (see below), whose sum is σ = 180563040. Its totient is φ = 34387200.

The previous prime is 79861403. The next prime is 79861409. The reversal of 79861408 is 80416897.

It is not an unprimeable number, because it can be changed into a prime (79861403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 718 + ... + 12658.

It is an arithmetic number, because the mean of its divisors is an integer number (3761730).

Almost surely, 2^79861408 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 79861408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90281520).

79861408 is an abundant number, since it is smaller than the sum of its proper divisors (100701632).

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

79861408 is a wasteful number, since it uses less digits than its factorization.

79861408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11981 (or 11973 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 79861408 is about 8936.5210233066. The cubic root of 79861408 is about 430.6379713372.

The spelling of 79861408 in words is "seventy-nine million, eight hundred sixty-one thousand, four hundred eight".