394757423 has 2 divisors, whose sum is σ = 394757424. Its totient is φ = 394757422.

The previous prime is 394757411. The next prime is 394757449. The reversal of 394757423 is 324757493.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 394757423 - 2¹⁰ = 394756399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394757123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197378711 + 197378712.

It is an arithmetic number, because the mean of its divisors is an integer number (197378712).

Almost surely, 2^394757423 is an apocalyptic number.

394757423 is a deficient number, since it is larger than the sum of its proper divisors (1).

394757423 is an equidigital number, since it uses as much as digits as its factorization.

394757423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 44.

The square root of 394757423 is about 19868.5032903840. The cubic root of 394757423 is about 733.5731635452.

The spelling of 394757423 in words is "three hundred ninety-four million, seven hundred fifty-seven thousand, four hundred twenty-three".