857994077 has 8 divisors (see below), whose sum is σ = 908200800. Its totient is φ = 808292304.

The previous prime is 857993993. The next prime is 857994079. The reversal of 857994077 is 770499758.

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

It is a cyclic number.

It is not a de Polignac number, because 857994077 - 2⁸ = 857993821 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 (857994079) 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, 122738 + ... + 129539.

It is an arithmetic number, because the mean of its divisors is an integer number (113525100).

Almost surely, 2^857994077 is an apocalyptic number.

It is an amenable number.

857994077 is a deficient number, since it is larger than the sum of its proper divisors (50206723).

857994077 is a wasteful number, since it uses less digits than its factorization.

857994077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252475.

The product of its (nonzero) digits is 4445280, while the sum is 56.

The square root of 857994077 is about 29291.5359276362. The cubic root of 857994077 is about 950.2285976199.

The spelling of 857994077 in words is "eight hundred fifty-seven million, nine hundred ninety-four thousand, seventy-seven".