393941 has 4 divisors (see below), whose sum is σ = 417132. Its totient is φ = 370752.

The previous prime is 393931. The next prime is 393947. The reversal of 393941 is 149393.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 122500 + 271441 = 350^2 + 521^2 .

It is a cyclic number.

It is not a de Polignac number, because 393941 - 2¹⁴ = 377557 is a prime.

It is a super-2 number, since 2×393941² = 310379022962, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11570 + ... + 11603.

It is an arithmetic number, because the mean of its divisors is an integer number (104283).

2³⁹³⁹⁴¹ is an apocalyptic number.

It is an amenable number.

393941 is a deficient number, since it is larger than the sum of its proper divisors (23191).

393941 is a wasteful number, since it uses less digits than its factorization.

393941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23190.

The product of its digits is 2916, while the sum is 29.

The square root of 393941 is about 627.6471938916. The cubic root of 393941 is about 73.3067098029.

The spelling of 393941 in words is "three hundred ninety-three thousand, nine hundred forty-one".