427892917 has 2 divisors, whose sum is σ = 427892918. Its totient is φ = 427892916.

The previous prime is 427892909. The next prime is 427892923. The reversal of 427892917 is 719298724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 256832676 + 171060241 = 16026^2 + 13079^2 .

It is a cyclic number.

It is not a de Polignac number, because 427892917 - 2³ = 427892909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427892947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213946458 + 213946459.

It is an arithmetic number, because the mean of its divisors is an integer number (213946459).

Almost surely, 2^427892917 is an apocalyptic number.

It is an amenable number.

427892917 is a deficient number, since it is larger than the sum of its proper divisors (1).

427892917 is an equidigital number, since it uses as much as digits as its factorization.

427892917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 49.

The square root of 427892917 is about 20685.5726775934. The cubic root of 427892917 is about 753.5493493651.

The spelling of 427892917 in words is "four hundred twenty-seven million, eight hundred ninety-two thousand, nine hundred seventeen".