814376857 has 12 divisors (see below), whose sum is σ = 988687360. Its totient is φ = 656974656.

The previous prime is 814376821. The next prime is 814376863. The reversal of 814376857 is 758673418.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-814376857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 814376857.

It is not an unprimeable number, because it can be changed into a prime (814376807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 199257 + ... + 203302.

Almost surely, 2^814376857 is an apocalyptic number.

It is an amenable number.

814376857 is a deficient number, since it is larger than the sum of its proper divisors (174310503).

814376857 is a wasteful number, since it uses less digits than its factorization.

814376857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402600 (or 402583 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 49.

The square root of 814376857 is about 28537.2888866479. The cubic root of 814376857 is about 933.8457381792.

The spelling of 814376857 in words is "eight hundred fourteen million, three hundred seventy-six thousand, eight hundred fifty-seven".