394662241 has 2 divisors, whose sum is σ = 394662242. Its totient is φ = 394662240.

The previous prime is 394662217. The next prime is 394662263. The reversal of 394662241 is 142266493.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 360848016 + 33814225 = 18996^2 + 5815^2 .

It is a cyclic number.

It is not a de Polignac number, because 394662241 - 2¹¹ = 394660193 is a prime.

It is a super-2 number, since 2×394662241² = 311516568942284162, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 394662241.

It is not a weakly prime, because it can be changed into another prime (394662341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197331120 + 197331121.

It is an arithmetic number, because the mean of its divisors is an integer number (197331121).

Almost surely, 2^394662241 is an apocalyptic number.

It is an amenable number.

394662241 is a deficient number, since it is larger than the sum of its proper divisors (1).

394662241 is an equidigital number, since it uses as much as digits as its factorization.

394662241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 37.

The square root of 394662241 is about 19866.1078472860. The cubic root of 394662241 is about 733.5142002685.

The spelling of 394662241 in words is "three hundred ninety-four million, six hundred sixty-two thousand, two hundred forty-one".