79479019 has 2 divisors, whose sum is σ = 79479020. Its totient is φ = 79479018.

The previous prime is 79479017. The next prime is 79479031. The reversal of 79479019 is 91097497.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79479019 - 2¹ = 79479017 is a prime.

It is a super-2 number, since 2×79479019² = 12633828922404722, which contains 22 as substring.

Together with 79479017, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 79479019.

It is not a weakly prime, because it can be changed into another prime (79479017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39739509 + 39739510.

It is an arithmetic number, because the mean of its divisors is an integer number (39739510).

Almost surely, 2^79479019 is an apocalyptic number.

79479019 is a deficient number, since it is larger than the sum of its proper divisors (1).

79479019 is an equidigital number, since it uses as much as digits as its factorization.

79479019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 142884, while the sum is 46.

The square root of 79479019 is about 8915.1006163700. The cubic root of 79479019 is about 429.9495505983.

The spelling of 79479019 in words is "seventy-nine million, four hundred seventy-nine thousand, nineteen".