856169464 has 8 divisors (see below), whose sum is σ = 1605317760. Its totient is φ = 428084728.

The previous prime is 856169459. The next prime is 856169467. The reversal of 856169464 is 464961658.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856169467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53510584 + ... + 53510599.

It is an arithmetic number, because the mean of its divisors is an integer number (200664720).

Almost surely, 2^856169464 is an apocalyptic number.

It is an amenable number.

856169464 is a deficient number, since it is larger than the sum of its proper divisors (749148296).

856169464 is a wasteful number, since it uses less digits than its factorization.

856169464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107021189 (or 107021185 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 49.

The square root of 856169464 is about 29260.3736134725. The cubic root of 856169464 is about 949.5545331606.

The spelling of 856169464 in words is "eight hundred fifty-six million, one hundred sixty-nine thousand, four hundred sixty-four".