858897813 has 8 divisors (see below), whose sum is σ = 1147150368. Its totient is φ = 571621904.

The previous prime is 858897791. The next prime is 858897821. The reversal of 858897813 is 318798858.

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 858897813 - 2²⁵ = 825343381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (858897313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242106 + ... + 245627.

It is an arithmetic number, because the mean of its divisors is an integer number (143393796).

Almost surely, 2^858897813 is an apocalyptic number.

It is an amenable number.

858897813 is a deficient number, since it is larger than the sum of its proper divisors (288252555).

858897813 is a wasteful number, since it uses less digits than its factorization.

858897813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488323.

The product of its digits is 3870720, while the sum is 57.

The square root of 858897813 is about 29306.9584399337. The cubic root of 858897813 is about 950.5621098117.

The spelling of 858897813 in words is "eight hundred fifty-eight million, eight hundred ninety-seven thousand, eight hundred thirteen".