856338797 has 4 divisors (see below), whose sum is σ = 901409280. Its totient is φ = 811268316.

The previous prime is 856338787. The next prime is 856338799. The reversal of 856338797 is 797833658.

It is a happy number.

856338797 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.

It is a cyclic number.

It is not a de Polignac number, because 856338797 - 2⁸ = 856338541 is a prime.

It is a super-2 number, since 2×856338797² = 1466632270494814418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856338799) 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, 22535213 + ... + 22535250.

It is an arithmetic number, because the mean of its divisors is an integer number (225352320).

Almost surely, 2^856338797 is an apocalyptic number.

It is an amenable number.

856338797 is a deficient number, since it is larger than the sum of its proper divisors (45070483).

856338797 is a wasteful number, since it uses less digits than its factorization.

856338797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45070482.

The product of its digits is 7620480, while the sum is 56.

The square root of 856338797 is about 29263.2670254023. The cubic root of 856338797 is about 949.6171299265.

The spelling of 856338797 in words is "eight hundred fifty-six million, three hundred thirty-eight thousand, seven hundred ninety-seven".