856229403 has 4 divisors (see below), whose sum is σ = 1141639208. Its totient is φ = 570819600.

The previous prime is 856229389. The next prime is 856229431. The reversal of 856229403 is 304922658.

It is a happy number.

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

It is not a de Polignac number, because 856229403 - 2²⁰ = 855180827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (856229443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142704898 + ... + 142704903.

It is an arithmetic number, because the mean of its divisors is an integer number (285409802).

Almost surely, 2^856229403 is an apocalyptic number.

856229403 is a deficient number, since it is larger than the sum of its proper divisors (285409805).

856229403 is a wasteful number, since it uses less digits than its factorization.

856229403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285409804.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 856229403 is about 29261.3978305890. The cubic root of 856229403 is about 949.5766915547.

The spelling of 856229403 in words is "eight hundred fifty-six million, two hundred twenty-nine thousand, four hundred three".