394023610369 has 9 divisors (see below), whose sum is σ = 396558738849. Its totient is φ = 391504598100.

The previous prime is 394023610301. The next prime is 394023610417. The reversal of 394023610369 is 963016320493.

The square root of 394023610369 is 627713.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 394023610369 - 2⁹ = 394023609857 is a prime.

It is a super-2 number, since 2×394023610369² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394023619369) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 102315294 + ... + 102319144.

Almost surely, 2^394023610369 is an apocalyptic number.

394023610369 is the 627713-rd square number.

394023610369 is the 313857-th centered octagonal number.

It is an amenable number.

394023610369 is a deficient number, since it is larger than the sum of its proper divisors (2535128480).

394023610369 is an frugal number, since it uses more digits than its factorization.

394023610369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8028 (or 4014 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 46.

The spelling of 394023610369 in words is "three hundred ninety-four billion, twenty-three million, six hundred ten thousand, three hundred sixty-nine".