857289404 has 12 divisors (see below), whose sum is σ = 1518332424. Its totient is φ = 423480144.

The previous prime is 857289397. The next prime is 857289421. The reversal of 857289404 is 404982758.

It is a happy number.

857289404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1290767 + ... + 1291430.

It is an arithmetic number, because the mean of its divisors is an integer number (126527702).

Almost surely, 2^857289404 is an apocalyptic number.

It is an amenable number.

857289404 is a deficient number, since it is larger than the sum of its proper divisors (661043020).

857289404 is a wasteful number, since it uses less digits than its factorization.

857289404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2582284 (or 2582282 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 857289404 is about 29279.5048455400. The cubic root of 857289404 is about 949.9683845434.

The spelling of 857289404 in words is "eight hundred fifty-seven million, two hundred eighty-nine thousand, four hundred four".