396335891 has 16 divisors (see below), whose sum is σ = 458042880. Its totient is φ = 335923200.

The previous prime is 396335879. The next prime is 396335903. The reversal of 396335891 is 198533693.

It is an interprime number because it is at equal distance from previous prime (396335879) and next prime (396335903).

It is a cyclic number.

It is not a de Polignac number, because 396335891 - 2²² = 392141587 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396335831) 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, 270920 + ... + 272378.

It is an arithmetic number, because the mean of its divisors is an integer number (28627680).

Almost surely, 2^396335891 is an apocalyptic number.

396335891 is a deficient number, since it is larger than the sum of its proper divisors (61706989).

396335891 is a wasteful number, since it uses less digits than its factorization.

396335891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1874.

The product of its digits is 524880, while the sum is 47.

The square root of 396335891 is about 19908.1865321782. The cubic root of 396335891 is about 734.5496128528.

The spelling of 396335891 in words is "three hundred ninety-six million, three hundred thirty-five thousand, eight hundred ninety-one".