394307853 has 16 divisors (see below), whose sum is σ = 542366400. Its totient is φ = 254624256.

The previous prime is 394307839. The next prime is 394307857. The reversal of 394307853 is 358703493.

It is a happy number.

It is not a de Polignac number, because 394307853 - 2¹⁷ = 394176781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394307857) 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, 17373 + ... + 33021.

It is an arithmetic number, because the mean of its divisors is an integer number (33897900).

Almost surely, 2^394307853 is an apocalyptic number.

It is an amenable number.

394307853 is a deficient number, since it is larger than the sum of its proper divisors (148058547).

394307853 is a wasteful number, since it uses less digits than its factorization.

394307853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15916.

The product of its (nonzero) digits is 272160, while the sum is 42.

The square root of 394307853 is about 19857.1864321207. The cubic root of 394307853 is about 733.2945808493.

The spelling of 394307853 in words is "three hundred ninety-four million, three hundred seven thousand, eight hundred fifty-three".