396399393 has 16 divisors (see below), whose sum is σ = 632432640. Its totient is φ = 243937872.

The previous prime is 396399391. The next prime is 396399401. The reversal of 396399393 is 393993693.

It is not a de Polignac number, because 396399393 - 2¹ = 396399391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (396399391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 564321 + ... + 565022.

It is an arithmetic number, because the mean of its divisors is an integer number (39527040).

Almost surely, 2^396399393 is an apocalyptic number.

It is an amenable number.

396399393 is a deficient number, since it is larger than the sum of its proper divisors (236033247).

396399393 is a wasteful number, since it uses less digits than its factorization.

396399393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129365 (or 1129359 counting only the distinct ones).

The product of its digits is 3188646, while the sum is 54.

The square root of 396399393 is about 19909.7813398339. The cubic root of 396399393 is about 734.5888412612.

The spelling of 396399393 in words is "three hundred ninety-six million, three hundred ninety-nine thousand, three hundred ninety-three".