394693417 has 2 divisors, whose sum is σ = 394693418. Its totient is φ = 394693416.

The previous prime is 394693399. The next prime is 394693423. The reversal of 394693417 is 714396493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 394578496 + 114921 = 19864^2 + 339^2 .

It is a cyclic number.

It is not a de Polignac number, because 394693417 - 2¹⁵ = 394660649 is a prime.

It is not a weakly prime, because it can be changed into another prime (394693427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197346708 + 197346709.

It is an arithmetic number, because the mean of its divisors is an integer number (197346709).

Almost surely, 2^394693417 is an apocalyptic number.

It is an amenable number.

394693417 is a deficient number, since it is larger than the sum of its proper divisors (1).

394693417 is an equidigital number, since it uses as much as digits as its factorization.

394693417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 46.

The square root of 394693417 is about 19866.8924847345. The cubic root of 394693417 is about 733.5335141984.

The spelling of 394693417 in words is "three hundred ninety-four million, six hundred ninety-three thousand, four hundred seventeen".