393901 has 2 divisors, whose sum is σ = 393902. Its totient is φ = 393900.

The previous prime is 393871. The next prime is 393919. The reversal of 393901 is 109393.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 391876 + 2025 = 626^2 + 45^2 .

It is a cyclic number.

It is not a de Polignac number, because 393901 - 2¹³ = 385709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (393931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196950 + 196951.

It is an arithmetic number, because the mean of its divisors is an integer number (196951).

2³⁹³⁹⁰¹ is an apocalyptic number.

It is an amenable number.

393901 is a deficient number, since it is larger than the sum of its proper divisors (1).

393901 is an equidigital number, since it uses as much as digits as its factorization.

393901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 729, while the sum is 25.

The square root of 393901 is about 627.6153280474. The cubic root of 393901 is about 73.3042285789.

The spelling of 393901 in words is "three hundred ninety-three thousand, nine hundred one".