394000501 has 2 divisors, whose sum is σ = 394000502. Its totient is φ = 394000500.

The previous prime is 394000493. The next prime is 394000507. The reversal of 394000501 is 105000493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 271920100 + 122080401 = 16490^2 + 11049^2 .

It is a cyclic number.

It is not a de Polignac number, because 394000501 - 2³ = 394000493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394000507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197000250 + 197000251.

It is an arithmetic number, because the mean of its divisors is an integer number (197000251).

Almost surely, 2^394000501 is an apocalyptic number.

It is an amenable number.

394000501 is a deficient number, since it is larger than the sum of its proper divisors (1).

394000501 is an equidigital number, since it uses as much as digits as its factorization.

394000501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 394000501 is about 19849.4458612829. The cubic root of 394000501 is about 733.1040037502.

Adding to 394000501 its reverse (105000493), we get a palindrome (499000994).

The spelling of 394000501 in words is "three hundred ninety-four million, five hundred one", and thus it is an aban number.