427807957 has 2 divisors, whose sum is σ = 427807958. Its totient is φ = 427807956.

The previous prime is 427807951. The next prime is 427807993. The reversal of 427807957 is 759708724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 370139121 + 57668836 = 19239^2 + 7594^2 .

It is a cyclic number.

It is not a de Polignac number, because 427807957 - 2⁷ = 427807829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 427807957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427807951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213903978 + 213903979.

It is an arithmetic number, because the mean of its divisors is an integer number (213903979).

Almost surely, 2^427807957 is an apocalyptic number.

It is an amenable number.

427807957 is a deficient number, since it is larger than the sum of its proper divisors (1).

427807957 is an equidigital number, since it uses as much as digits as its factorization.

427807957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 987840, while the sum is 49.

The square root of 427807957 is about 20683.5189704267. The cubic root of 427807957 is about 753.4994725635.

The spelling of 427807957 in words is "four hundred twenty-seven million, eight hundred seven thousand, nine hundred fifty-seven".