394941907 has 2 divisors, whose sum is σ = 394941908. Its totient is φ = 394941906.

The previous prime is 394941863. The next prime is 394941913. The reversal of 394941907 is 709149493.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 394941907 - 2⁷ = 394941779 is a prime.

It is not a weakly prime, because it can be changed into another prime (394941917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197470953 + 197470954.

It is an arithmetic number, because the mean of its divisors is an integer number (197470954).

Almost surely, 2^394941907 is an apocalyptic number.

394941907 is a deficient number, since it is larger than the sum of its proper divisors (1).

394941907 is an equidigital number, since it uses as much as digits as its factorization.

394941907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 394941907 is about 19873.1453725876. The cubic root of 394941907 is about 733.6874205776.

The spelling of 394941907 in words is "three hundred ninety-four million, nine hundred forty-one thousand, nine hundred seven".