868921899 has 8 divisors (see below), whose sum is σ = 1208934912. Its totient is φ = 554095080.

The previous prime is 868921891. The next prime is 868921913. The reversal of 868921899 is 998129868.

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

It is not a de Polignac number, because 868921899 - 2³ = 868921891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (868921891) 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, 6296467 + ... + 6296604.

It is an arithmetic number, because the mean of its divisors is an integer number (151116864).

Almost surely, 2^868921899 is an apocalyptic number.

868921899 is a deficient number, since it is larger than the sum of its proper divisors (340013013).

868921899 is a wasteful number, since it uses less digits than its factorization.

868921899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12593097.

The product of its digits is 4478976, while the sum is 60.

The square root of 868921899 is about 29477.4812187202. The cubic root of 868921899 is about 954.2457789628.

The spelling of 868921899 in words is "eight hundred sixty-eight million, nine hundred twenty-one thousand, eight hundred ninety-nine".