856454 has 4 divisors (see below), whose sum is σ = 1284684. Its totient is φ = 428226.

The previous prime is 856441. The next prime is 856459. The reversal of 856454 is 454658.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 856454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214112 + ... + 214115.

It is an arithmetic number, because the mean of its divisors is an integer number (321171).

2⁸⁵⁶⁴⁵⁴ is an apocalyptic number.

856454 is a deficient number, since it is larger than the sum of its proper divisors (428230).

856454 is a wasteful number, since it uses less digits than its factorization.

856454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428229.

The product of its digits is 19200, while the sum is 32.

The square root of 856454 is about 925.4479996196. The cubic root of 856454 is about 94.9659711919.

The spelling of 856454 in words is "eight hundred fifty-six thousand, four hundred fifty-four".