394235253 has 48 divisors (see below), whose sum is σ = 625178736. Its totient is φ = 238417920.

The previous prime is 394235221. The next prime is 394235267. The reversal of 394235253 is 352532493.

It can be written as a sum of positive squares in 8 ways, for example, as 887364 + 393347889 = 942^2 + 19833^2 .

It is not a de Polignac number, because 394235253 - 2⁵ = 394235221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394235293) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 494251 + ... + 495047.

It is an arithmetic number, because the mean of its divisors is an integer number (13024557).

Almost surely, 2^394235253 is an apocalyptic number.

It is an amenable number.

394235253 is a deficient number, since it is larger than the sum of its proper divisors (230943483).

394235253 is a wasteful number, since it uses less digits than its factorization.

394235253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934 (or 931 counting only the distinct ones).

The product of its digits is 97200, while the sum is 36.

The square root of 394235253 is about 19855.3582944252. The cubic root of 394235253 is about 733.2495733306.

The spelling of 394235253 in words is "three hundred ninety-four million, two hundred thirty-five thousand, two hundred fifty-three".