394790443 has 2 divisors, whose sum is σ = 394790444. Its totient is φ = 394790442.

The previous prime is 394790411. The next prime is 394790447. The reversal of 394790443 is 344097493.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 394790443 - 2⁵ = 394790411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 394790443.

It is not a weakly prime, because it can be changed into another prime (394790447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197395221 + 197395222.

It is an arithmetic number, because the mean of its divisors is an integer number (197395222).

Almost surely, 2^394790443 is an apocalyptic number.

394790443 is a deficient number, since it is larger than the sum of its proper divisors (1).

394790443 is an equidigital number, since it uses as much as digits as its factorization.

394790443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 43.

The square root of 394790443 is about 19869.3342364559. The cubic root of 394790443 is about 733.5936165365.

The spelling of 394790443 in words is "three hundred ninety-four million, seven hundred ninety thousand, four hundred forty-three".