857983379 has 8 divisors (see below), whose sum is σ = 938995200. Its totient is φ = 777473800.

The previous prime is 857983331. The next prime is 857983391. The reversal of 857983379 is 973389758.

857983379 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-857983379 is a prime.

It is a super-2 number, since 2×857983379² = 1472270957280515282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (857983309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121979 + ... + 128820.

It is an arithmetic number, because the mean of its divisors is an integer number (117374400).

Almost surely, 2^857983379 is an apocalyptic number.

857983379 is a deficient number, since it is larger than the sum of its proper divisors (81011821).

857983379 is a wasteful number, since it uses less digits than its factorization.

857983379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251121.

The product of its digits is 11430720, while the sum is 59.

The square root of 857983379 is about 29291.3533145876. The cubic root of 857983379 is about 950.2246482579.

The spelling of 857983379 in words is "eight hundred fifty-seven million, nine hundred eighty-three thousand, three hundred seventy-nine".