79977248 has 96 divisors (see below), whose sum is σ = 184415616. Its totient is φ = 33804288.

The previous prime is 79977199. The next prime is 79977253. The reversal of 79977248 is 84277997.

It is a Cunningham number, because it is equal to 8943²-1.

It is a self number, because there is not a number n which added to its sum of digits gives 79977248.

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, 303965 + ... + 304227.

It is an arithmetic number, because the mean of its divisors is an integer number (1920996).

Almost surely, 2^79977248 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 79977248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92207808).

79977248 is an abundant number, since it is smaller than the sum of its proper divisors (104438368).

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

79977248 is a wasteful number, since it uses less digits than its factorization.

79977248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346 (or 338 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 53.

The square root of 79977248 is about 8942.9999440903. Note that the first 4 decimals coincide. The cubic root of 79977248 is about 430.8460860516.

The spelling of 79977248 in words is "seventy-nine million, nine hundred seventy-seven thousand, two hundred forty-eight".