427047979 has 2 divisors, whose sum is σ = 427047980. Its totient is φ = 427047978.

The previous prime is 427047967. The next prime is 427047989. The reversal of 427047979 is 979740724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 427047979 - 2⁵ = 427047947 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (427047919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213523989 + 213523990.

It is an arithmetic number, because the mean of its divisors is an integer number (213523990).

Almost surely, 2^427047979 is an apocalyptic number.

427047979 is a deficient number, since it is larger than the sum of its proper divisors (1).

427047979 is an equidigital number, since it uses as much as digits as its factorization.

427047979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 889056, while the sum is 49.

The square root of 427047979 is about 20665.1392204359. The cubic root of 427047979 is about 753.0530242310.

The spelling of 427047979 in words is "four hundred twenty-seven million, forty-seven thousand, nine hundred seventy-nine".