427925857 has 4 divisors (see below), whose sum is σ = 433342720. Its totient is φ = 422508996.

The previous prime is 427925837. The next prime is 427925863. The reversal of 427925857 is 758529724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 427925857 - 2²³ = 419537249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 427925857.

It is not an unprimeable number, because it can be changed into a prime (427925807) 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 3 ways as a sum of consecutive naturals, for example, 2708313 + ... + 2708470.

It is an arithmetic number, because the mean of its divisors is an integer number (108335680).

Almost surely, 2^427925857 is an apocalyptic number.

It is an amenable number.

427925857 is a deficient number, since it is larger than the sum of its proper divisors (5416863).

427925857 is an equidigital number, since it uses as much as digits as its factorization.

427925857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5416862.

The product of its digits is 1411200, while the sum is 49.

The square root of 427925857 is about 20686.3688693787. The cubic root of 427925857 is about 753.5686854168.

The spelling of 427925857 in words is "four hundred twenty-seven million, nine hundred twenty-five thousand, eight hundred fifty-seven".