856416001 has 4 divisors (see below), whose sum is σ = 978761152. Its totient is φ = 734070852.

The previous prime is 856415981. The next prime is 856416019. The reversal of 856416001 is 100614658.

856416001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100614658 = 2 ⋅50307329.

It is a cyclic number.

It is not a de Polignac number, because 856416001 - 2¹⁵ = 856383233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (856416031) 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, 61172565 + ... + 61172578.

It is an arithmetic number, because the mean of its divisors is an integer number (244690288).

Almost surely, 2^856416001 is an apocalyptic number.

It is an amenable number.

856416001 is a deficient number, since it is larger than the sum of its proper divisors (122345151).

856416001 is a wasteful number, since it uses less digits than its factorization.

856416001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122345150.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 856416001 is about 29264.5861238460. The cubic root of 856416001 is about 949.6456669332.

The spelling of 856416001 in words is "eight hundred fifty-six million, four hundred sixteen thousand, one".