394204253069 has 12 divisors (see below), whose sum is σ = 437133408348. Its totient is φ = 355196096640.

The previous prime is 394204253057. The next prime is 394204253101. The reversal of 394204253069 is 960352402493.

It can be written as a sum of positive squares in 2 ways, for example, as 14178855625 + 380025397444 = 119075^2 + 616462^2 .

It is not a de Polignac number, because 394204253069 - 2²⁴ = 394187475853 is a prime.

It is a super-2 number, since 2×394204253069² (a number of 24 digits) 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 (394204253029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14401754 + ... + 14429099.

It is an arithmetic number, because the mean of its divisors is an integer number (36427784029).

Almost surely, 2^394204253069 is an apocalyptic number.

It is an amenable number.

394204253069 is a deficient number, since it is larger than the sum of its proper divisors (42929155279).

394204253069 is a wasteful number, since it uses less digits than its factorization.

394204253069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28830988 (or 28830977 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 47.

The spelling of 394204253069 in words is "three hundred ninety-four billion, two hundred four million, two hundred fifty-three thousand, sixty-nine".