805868931 has 8 divisors (see below), whose sum is σ = 1227990784. Its totient is φ = 460496520.

The previous prime is 805868897. The next prime is 805868939. The reversal of 805868931 is 139868508.

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

It is not a de Polignac number, because 805868931 - 2⁹ = 805868419 is a prime.

It is a super-2 number, since 2×805868931² = 1298849467902165522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (805868939) 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, 19187335 + ... + 19187376.

It is an arithmetic number, because the mean of its divisors is an integer number (153498848).

Almost surely, 2^805868931 is an apocalyptic number.

805868931 is a deficient number, since it is larger than the sum of its proper divisors (422121853).

805868931 is a wasteful number, since it uses less digits than its factorization.

805868931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38374721.

The product of its (nonzero) digits is 414720, while the sum is 48.

The square root of 805868931 is about 28387.8306849960. The cubic root of 805868931 is about 930.5823350192.

The spelling of 805868931 in words is "eight hundred five million, eight hundred sixty-eight thousand, nine hundred thirty-one".