394628807 has 2 divisors, whose sum is σ = 394628808. Its totient is φ = 394628806.

The previous prime is 394628797. The next prime is 394628809. The reversal of 394628807 is 708826493.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 394628807 - 2⁸ = 394628551 is a prime.

Together with 394628809, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394628809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197314403 + 197314404.

It is an arithmetic number, because the mean of its divisors is an integer number (197314404).

Almost surely, 2^394628807 is an apocalyptic number.

394628807 is a deficient number, since it is larger than the sum of its proper divisors (1).

394628807 is an equidigital number, since it uses as much as digits as its factorization.

394628807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 394628807 is about 19865.2663460624. The cubic root of 394628807 is about 733.4934863485.

The spelling of 394628807 in words is "three hundred ninety-four million, six hundred twenty-eight thousand, eight hundred seven".