427955857 has 24 divisors (see below), whose sum is σ = 508201512. Its totient is φ = 359251200.

The previous prime is 427955839. The next prime is 427955861. The reversal of 427955857 is 758559724.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 24910081 + 403045776 = 4991^2 + 20076^2 .

It is not a de Polignac number, because 427955857 - 2⁷ = 427955729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (427955557) 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 in 23 ways as a sum of consecutive naturals, for example, 647107 + ... + 647767.

It is an arithmetic number, because the mean of its divisors is an integer number (21175063).

Almost surely, 2^427955857 is an apocalyptic number.

It is an amenable number.

427955857 is a deficient number, since it is larger than the sum of its proper divisors (80245655).

427955857 is a wasteful number, since it uses less digits than its factorization.

427955857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929 (or 922 counting only the distinct ones).

The product of its digits is 3528000, while the sum is 52.

The square root of 427955857 is about 20687.0939718463. The cubic root of 427955857 is about 753.5862948009.

The spelling of 427955857 in words is "four hundred twenty-seven million, nine hundred fifty-five thousand, eight hundred fifty-seven".