394340913 has 8 divisors (see below), whose sum is σ = 584208800. Its totient is φ = 262893924.

The previous prime is 394340897. The next prime is 394340923. The reversal of 394340913 is 319043493.

It is not a de Polignac number, because 394340913 - 2⁴ = 394340897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (394340923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7302583 + ... + 7302636.

It is an arithmetic number, because the mean of its divisors is an integer number (73026100).

Almost surely, 2^394340913 is an apocalyptic number.

It is an amenable number.

394340913 is a deficient number, since it is larger than the sum of its proper divisors (189867887).

394340913 is a wasteful number, since it uses less digits than its factorization.

394340913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14605228 (or 14605222 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The square root of 394340913 is about 19858.0188588892. The cubic root of 394340913 is about 733.3150741781.

The spelling of 394340913 in words is "three hundred ninety-four million, three hundred forty thousand, nine hundred thirteen".