856052393 has 12 divisors (see below), whose sum is σ = 997313040. Its totient is φ = 732656232.

The previous prime is 856052377. The next prime is 856052399. The reversal of 856052393 is 393250658.

It is not a de Polignac number, because 856052393 - 2⁴ = 856052377 is a prime.

It is a super-2 number, since 2×856052393² = 1465651399122052898, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 856052393.

It is not an unprimeable number, because it can be changed into a prime (856052399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20678 + ... + 46256.

It is an arithmetic number, because the mean of its divisors is an integer number (83109420).

Almost surely, 2^856052393 is an apocalyptic number.

It is an amenable number.

856052393 is a deficient number, since it is larger than the sum of its proper divisors (141260647).

856052393 is a wasteful number, since it uses less digits than its factorization.

856052393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26276 (or 26269 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 41.

The square root of 856052393 is about 29258.3730408921. The cubic root of 856052393 is about 949.5112510883.

The spelling of 856052393 in words is "eight hundred fifty-six million, fifty-two thousand, three hundred ninety-three".