394160631 has 8 divisors (see below), whose sum is σ = 525740160. Its totient is φ = 262677432.

The previous prime is 394160617. The next prime is 394160633. The reversal of 394160631 is 136061493.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-394160631 is a prime.

It is a super-2 number, since 2×394160631² = 310725206060636322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 394160592 and 394160601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394160633) 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, 13921 + ... + 31338.

It is an arithmetic number, because the mean of its divisors is an integer number (65717520).

Almost surely, 2^394160631 is an apocalyptic number.

394160631 is a deficient number, since it is larger than the sum of its proper divisors (131579529).

394160631 is a wasteful number, since it uses less digits than its factorization.

394160631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48165.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 394160631 is about 19853.4790653930. The cubic root of 394160631 is about 733.2033065378.

The spelling of 394160631 in words is "three hundred ninety-four million, one hundred sixty thousand, six hundred thirty-one".