394648313 has 4 divisors (see below), whose sum is σ = 394915200. Its totient is φ = 394381428.

The previous prime is 394648307. The next prime is 394648351. The reversal of 394648313 is 313846493.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 394648313 - 2⁸ = 394648057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394648393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131213 + ... + 134186.

It is an arithmetic number, because the mean of its divisors is an integer number (98728800).

Almost surely, 2^394648313 is an apocalyptic number.

It is an amenable number.

394648313 is a deficient number, since it is larger than the sum of its proper divisors (266887).

394648313 is a wasteful number, since it uses less digits than its factorization.

394648313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266886.

The product of its digits is 186624, while the sum is 41.

The square root of 394648313 is about 19865.7572974201. The cubic root of 394648313 is about 733.5055713661.

The spelling of 394648313 in words is "three hundred ninety-four million, six hundred forty-eight thousand, three hundred thirteen".