79455947 has 2 divisors, whose sum is σ = 79455948. Its totient is φ = 79455946.

The previous prime is 79455941. The next prime is 79456001. The reversal of 79455947 is 74955497.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79455947 - 2²⁴ = 62678731 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 79455895 and 79455904.

It is not a weakly prime, because it can be changed into another prime (79455941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39727973 + 39727974.

It is an arithmetic number, because the mean of its divisors is an integer number (39727974).

Almost surely, 2^79455947 is an apocalyptic number.

79455947 is a deficient number, since it is larger than the sum of its proper divisors (1).

79455947 is an equidigital number, since it uses as much as digits as its factorization.

79455947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1587600, while the sum is 50.

The square root of 79455947 is about 8913.8065381744. The cubic root of 79455947 is about 429.9079431562.

The spelling of 79455947 in words is "seventy-nine million, four hundred fifty-five thousand, nine hundred forty-seven".