427915679 has 2 divisors, whose sum is σ = 427915680. Its totient is φ = 427915678.

The previous prime is 427915639. The next prime is 427915711. The reversal of 427915679 is 976519724.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-427915679 is a prime.

It is a super-2 number, since 2×427915679² = 366223656668062082, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427915639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213957839 + 213957840.

It is an arithmetic number, because the mean of its divisors is an integer number (213957840).

Almost surely, 2^427915679 is an apocalyptic number.

427915679 is a deficient number, since it is larger than the sum of its proper divisors (1).

427915679 is an equidigital number, since it uses as much as digits as its factorization.

427915679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 952560, while the sum is 50.

The square root of 427915679 is about 20686.1228605072. The cubic root of 427915679 is about 753.5627109528.

The spelling of 427915679 in words is "four hundred twenty-seven million, nine hundred fifteen thousand, six hundred seventy-nine".