394222903 has 2 divisors, whose sum is σ = 394222904. Its totient is φ = 394222902.

The previous prime is 394222891. The next prime is 394222909. The reversal of 394222903 is 309222493.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 394222903 - 2⁹ = 394222391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394222909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197111451 + 197111452.

It is an arithmetic number, because the mean of its divisors is an integer number (197111452).

Almost surely, 2^394222903 is an apocalyptic number.

394222903 is a deficient number, since it is larger than the sum of its proper divisors (1).

394222903 is an equidigital number, since it uses as much as digits as its factorization.

394222903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 394222903 is about 19855.0472928170. The cubic root of 394222903 is about 733.2419165430.

The spelling of 394222903 in words is "three hundred ninety-four million, two hundred twenty-two thousand, nine hundred three".