79486920 has 80 divisors (see below), whose sum is σ = 267175260. Its totient is φ = 21195648.

The previous prime is 79486907. The next prime is 79486933. The reversal of 79486920 is 2968497.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (79486907) and next prime (79486933).

It can be written as a sum of positive squares in 2 ways, for example, as 67667076 + 11819844 = 8226^2 + 3438^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9027 + ... + 15506.

Almost surely, 2^79486920 is an apocalyptic number.

It is an amenable number.

79486920 is an abundant number, since it is smaller than the sum of its proper divisors (187688340).

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

79486920 is a wasteful number, since it uses less digits than its factorization.

79486920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24556 (or 24543 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 79486920 is about 8915.5437299135. The cubic root of 79486920 is about 429.9637972045.

The spelling of 79486920 in words is "seventy-nine million, four hundred eighty-six thousand, nine hundred twenty".