394397701 has 2 divisors, whose sum is σ = 394397702. Its totient is φ = 394397700.

The previous prime is 394397683. The next prime is 394397747. The reversal of 394397701 is 107793493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 338596801 + 55800900 = 18401^2 + 7470^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-394397701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394397401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197198850 + 197198851.

It is an arithmetic number, because the mean of its divisors is an integer number (197198851).

Almost surely, 2^394397701 is an apocalyptic number.

It is an amenable number.

394397701 is a deficient number, since it is larger than the sum of its proper divisors (1).

394397701 is an equidigital number, since it uses as much as digits as its factorization.

394397701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 142884, while the sum is 43.

The square root of 394397701 is about 19859.4486580066. The cubic root of 394397701 is about 733.3502734149.

The spelling of 394397701 in words is "three hundred ninety-four million, three hundred ninety-seven thousand, seven hundred one".