857914990 has 8 divisors (see below), whose sum is σ = 1544247000. Its totient is φ = 343165992.

The previous prime is 857914969. The next prime is 857914991. The reversal of 857914990 is 99419758.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857914991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42895740 + ... + 42895759.

It is an arithmetic number, because the mean of its divisors is an integer number (193030875).

Almost surely, 2^857914990 is an apocalyptic number.

857914990 is a deficient number, since it is larger than the sum of its proper divisors (686332010).

857914990 is a wasteful number, since it uses less digits than its factorization.

857914990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85791506.

The product of its (nonzero) digits is 816480, while the sum is 52.

The square root of 857914990 is about 29290.1858990345. The cubic root of 857914990 is about 950.1994004338.

The spelling of 857914990 in words is "eight hundred fifty-seven million, nine hundred fourteen thousand, nine hundred ninety".