79854947 has 2 divisors, whose sum is σ = 79854948. Its totient is φ = 79854946.

The previous prime is 79854937. The next prime is 79854949. The reversal of 79854947 is 74945897.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79854947 - 2²² = 75660643 is a prime.

Together with 79854949, 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 (79854949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39927473 + 39927474.

It is an arithmetic number, because the mean of its divisors is an integer number (39927474).

Almost surely, 2^79854947 is an apocalyptic number.

79854947 is a deficient number, since it is larger than the sum of its proper divisors (1).

79854947 is an equidigital number, since it uses as much as digits as its factorization.

79854947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 53.

The square root of 79854947 is about 8936.1595218528. The cubic root of 79854947 is about 430.6263577722.

The spelling of 79854947 in words is "seventy-nine million, eight hundred fifty-four thousand, nine hundred forty-seven".