427679957 has 2 divisors, whose sum is σ = 427679958. Its totient is φ = 427679956.

The previous prime is 427679953. The next prime is 427679971. The reversal of 427679957 is 759976724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 404774161 + 22905796 = 20119^2 + 4786^2 .

It is a cyclic number.

It is not a de Polignac number, because 427679957 - 2² = 427679953 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427679953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213839978 + 213839979.

It is an arithmetic number, because the mean of its divisors is an integer number (213839979).

Almost surely, 2^427679957 is an apocalyptic number.

It is an amenable number.

427679957 is a deficient number, since it is larger than the sum of its proper divisors (1).

427679957 is an equidigital number, since it uses as much as digits as its factorization.

427679957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6667920, while the sum is 56.

The square root of 427679957 is about 20680.4244879064. The cubic root of 427679957 is about 753.4243161360.

The spelling of 427679957 in words is "four hundred twenty-seven million, six hundred seventy-nine thousand, nine hundred fifty-seven".