394504079 has 2 divisors, whose sum is σ = 394504080. Its totient is φ = 394504078.

The previous prime is 394504067. The next prime is 394504133. The reversal of 394504079 is 970405493.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 394504079 - 2²⁴ = 377726863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394504039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197252039 + 197252040.

It is an arithmetic number, because the mean of its divisors is an integer number (197252040).

Almost surely, 2^394504079 is an apocalyptic number.

394504079 is a deficient number, since it is larger than the sum of its proper divisors (1).

394504079 is an equidigital number, since it uses as much as digits as its factorization.

394504079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 394504079 is about 19862.1267491676. The cubic root of 394504079 is about 733.4162012185.

The spelling of 394504079 in words is "three hundred ninety-four million, five hundred four thousand, seventy-nine".