394031007 has 8 divisors (see below), whose sum is σ = 583749680. Its totient is φ = 262687320.

The previous prime is 394030999. The next prime is 394031017. The reversal of 394031007 is 700130493.

It is not a de Polignac number, because 394031007 - 2³ = 394030999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 14593741 = 394031007 / (3 + 9 + 4 + 0 + 3 + 1 + 0 + 0 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394031017) 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, 7296844 + ... + 7296897.

It is an arithmetic number, because the mean of its divisors is an integer number (72968710).

Almost surely, 2^394031007 is an apocalyptic number.

394031007 is a deficient number, since it is larger than the sum of its proper divisors (189718673).

394031007 is a wasteful number, since it uses less digits than its factorization.

394031007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14593750 (or 14593744 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 394031007 is about 19850.2142809593. The cubic root of 394031007 is about 733.1229237714.

The spelling of 394031007 in words is "three hundred ninety-four million, thirty-one thousand, seven".