394000493 has 2 divisors, whose sum is σ = 394000494. Its totient is φ = 394000492.

The previous prime is 394000469. The next prime is 394000501.

394000493 is nontrivially palindromic in base 10.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 230493124 + 163507369 = 15182^2 + 12787^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 394000493 - 2⁸ = 394000237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394000433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197000246 + 197000247.

It is an arithmetic number, because the mean of its divisors is an integer number (197000247).

Almost surely, 2^394000493 is an apocalyptic number.

It is an amenable number.

394000493 is a deficient number, since it is larger than the sum of its proper divisors (1).

394000493 is an equidigital number, since it uses as much as digits as its factorization.

394000493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 394000493 is about 19849.4456597659. The cubic root of 394000493 is about 733.1039987884.

It can be divided in two parts, 394000 and 493, that added together give a palindrome (394493).

The spelling of 394000493 in words is "three hundred ninety-four million, four hundred ninety-three", and thus it is an aban number.