857289413 has 16 divisors (see below), whose sum is σ = 917366400. Its totient is φ = 798336000.

The previous prime is 857289397. The next prime is 857289421. The reversal of 857289413 is 314982758.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 857289413 - 2⁴ = 857289397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857289473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 713213 + ... + 714413.

It is an arithmetic number, because the mean of its divisors is an integer number (57335400).

Almost surely, 2^857289413 is an apocalyptic number.

It is an amenable number.

857289413 is a deficient number, since it is larger than the sum of its proper divisors (60076987).

857289413 is a wasteful number, since it uses less digits than its factorization.

857289413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1628.

The product of its digits is 483840, while the sum is 47.

The square root of 857289413 is about 29279.5049992311. The cubic root of 857289413 is about 949.9683878678.

The spelling of 857289413 in words is "eight hundred fifty-seven million, two hundred eighty-nine thousand, four hundred thirteen".