79488019 has 4 divisors (see below), whose sum is σ = 85602496. Its totient is φ = 73373544.

The previous prime is 79487981. The next prime is 79488029. The reversal of 79488019 is 91088497.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 79488019 - 2²³ = 71099411 is a prime.

It is a super-2 number, since 2×79488019² = 12636690329088722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79488019.

It is not an unprimeable number, because it can be changed into a prime (79488029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3057219 + ... + 3057244.

It is an arithmetic number, because the mean of its divisors is an integer number (21400624).

Almost surely, 2^79488019 is an apocalyptic number.

79488019 is a deficient number, since it is larger than the sum of its proper divisors (6114477).

79488019 is a wasteful number, since it uses less digits than its factorization.

79488019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6114476.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 79488019 is about 8915.6053636307. The cubic root of 79488019 is about 429.9657787801.

The spelling of 79488019 in words is "seventy-nine million, four hundred eighty-eight thousand, nineteen".