858894995 has 24 divisors (see below), whose sum is σ = 1251292704. Its totient is φ = 554305536.

The previous prime is 858894991. The next prime is 858895013. The reversal of 858894995 is 599498858.

858894995 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 858894995 - 2² = 858894991 is a prime.

It is a super-2 number, since 2×858894995² = 1475401224872100050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (858894991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32342 + ... + 52571.

It is an arithmetic number, because the mean of its divisors is an integer number (52137196).

Almost surely, 2^858894995 is an apocalyptic number.

858894995 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

858894995 is a deficient number, since it is larger than the sum of its proper divisors (392397709).

858894995 is a wasteful number, since it uses less digits than its factorization.

858894995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84959 (or 84942 counting only the distinct ones).

The product of its digits is 37324800, while the sum is 65.

The square root of 858894995 is about 29306.9103625749. The cubic root of 858894995 is about 950.5610702286.

The spelling of 858894995 in words is "eight hundred fifty-eight million, eight hundred ninety-four thousand, nine hundred ninety-five".