856339401 has 16 divisors (see below), whose sum is σ = 1153474560. Its totient is φ = 565078800.

The previous prime is 856339397. The next prime is 856339423. The reversal of 856339401 is 104933658.

856339401 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 856339401 - 2² = 856339397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 856339401.

It is not an unprimeable number, because it can be changed into a prime (856339441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116176 + ... + 123326.

It is an arithmetic number, because the mean of its divisors is an integer number (72092160).

Almost surely, 2^856339401 is an apocalyptic number.

It is an amenable number.

856339401 is a deficient number, since it is larger than the sum of its proper divisors (297135159).

856339401 is a wasteful number, since it uses less digits than its factorization.

856339401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7556.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 856339401 is about 29263.2773455059. The cubic root of 856339401 is about 949.6173531904.

The spelling of 856339401 in words is "eight hundred fifty-six million, three hundred thirty-nine thousand, four hundred one".