394353901 has 2 divisors, whose sum is σ = 394353902. Its totient is φ = 394353900.

The previous prime is 394353899. The next prime is 394353917. The reversal of 394353901 is 109353493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 313821225 + 80532676 = 17715^2 + 8974^2 .

It is a cyclic number.

It is not a de Polignac number, because 394353901 - 2¹ = 394353899 is a prime.

Together with 394353899, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394353941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197176950 + 197176951.

It is an arithmetic number, because the mean of its divisors is an integer number (197176951).

Almost surely, 2^394353901 is an apocalyptic number.

It is an amenable number.

394353901 is a deficient number, since it is larger than the sum of its proper divisors (1).

394353901 is an equidigital number, since it uses as much as digits as its factorization.

394353901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43740, while the sum is 37.

The square root of 394353901 is about 19858.3458777412. The cubic root of 394353901 is about 733.3231249038.

The spelling of 394353901 in words is "three hundred ninety-four million, three hundred fifty-three thousand, nine hundred one".