857809014 has 8 divisors (see below), whose sum is σ = 1715618040. Its totient is φ = 285936336.

The previous prime is 857809003. The next prime is 857809019. The reversal of 857809014 is 410908758.

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

857809014 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857809019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71484079 + ... + 71484090.

It is an arithmetic number, because the mean of its divisors is an integer number (214452255).

Almost surely, 2^857809014 is an apocalyptic number.

857809014 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

857809014 is a wasteful number, since it uses less digits than its factorization.

857809014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142968174.

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 857809014 is about 29288.3767730477. The cubic root of 857809014 is about 950.1602736052.

The spelling of 857809014 in words is "eight hundred fifty-seven million, eight hundred nine thousand, fourteen".