79969280 has 44 divisors (see below), whose sum is σ = 191844840. Its totient is φ = 31985664.

The previous prime is 79969277. The next prime is 79969289. The reversal of 79969280 is 8296997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79969289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2690 + ... + 12929.

It is an arithmetic number, because the mean of its divisors is an integer number (4360110).

Almost surely, 2^79969280 is an apocalyptic number.

It is an amenable number.

79969280 is an abundant number, since it is smaller than the sum of its proper divisors (111875560).

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

79969280 is a wasteful number, since it uses less digits than its factorization.

79969280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15644 (or 15626 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 79969280 is about 8942.5544449000. The cubic root of 79969280 is about 430.8317774172.

The spelling of 79969280 in words is "seventy-nine million, nine hundred sixty-nine thousand, two hundred eighty".