393399941 has 8 divisors (see below), whose sum is σ = 454408704. Its totient is φ = 336598720.

The previous prime is 393399911. The next prime is 393399953. The reversal of 393399941 is 149993393.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-393399941 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 393399941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393399901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1051685 + ... + 1052058.

It is an arithmetic number, because the mean of its divisors is an integer number (56801088).

Almost surely, 2^393399941 is an apocalyptic number.

It is an amenable number.

393399941 is a deficient number, since it is larger than the sum of its proper divisors (61008763).

393399941 is a wasteful number, since it uses less digits than its factorization.

393399941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2103771.

The product of its digits is 708588, while the sum is 50.

The square root of 393399941 is about 19834.3122139388. The cubic root of 393399941 is about 732.7313334734.

The spelling of 393399941 in words is "three hundred ninety-three million, three hundred ninety-nine thousand, nine hundred forty-one".