79494971 has 2 divisors, whose sum is σ = 79494972. Its totient is φ = 79494970.

The previous prime is 79494959. The next prime is 79494973. The reversal of 79494971 is 17949497.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79494971 is a prime.

Together with 79494973, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (79494973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39747485 + 39747486.

It is an arithmetic number, because the mean of its divisors is an integer number (39747486).

Almost surely, 2^79494971 is an apocalyptic number.

79494971 is a deficient number, since it is larger than the sum of its proper divisors (1).

79494971 is an equidigital number, since it uses as much as digits as its factorization.

79494971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 571536, while the sum is 50.

The square root of 79494971 is about 8915.9952332872. The cubic root of 79494971 is about 429.9783133105.

The spelling of 79494971 in words is "seventy-nine million, four hundred ninety-four thousand, nine hundred seventy-one".