394469797 has 2 divisors, whose sum is σ = 394469798. Its totient is φ = 394469796.

The previous prime is 394469759. The next prime is 394469807. The reversal of 394469797 is 797964493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200675556 + 193794241 = 14166^2 + 13921^2 .

It is a cyclic number.

It is not a de Polignac number, because 394469797 - 2¹⁹ = 393945509 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394469707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197234898 + 197234899.

It is an arithmetic number, because the mean of its divisors is an integer number (197234899).

Almost surely, 2^394469797 is an apocalyptic number.

It is an amenable number.

394469797 is a deficient number, since it is larger than the sum of its proper divisors (1).

394469797 is an equidigital number, since it uses as much as digits as its factorization.

394469797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10287648, while the sum is 58.

The square root of 394469797 is about 19861.2637311929. The cubic root of 394469797 is about 733.3949562312.

The spelling of 394469797 in words is "three hundred ninety-four million, four hundred sixty-nine thousand, seven hundred ninety-seven".