396885439 has 4 divisors (see below), whose sum is σ = 396927256. Its totient is φ = 396843624.

The previous prime is 396885431. The next prime is 396885457. The reversal of 396885439 is 934588693.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 396885439 - 2³ = 396885431 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 396885439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396885431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 937 + ... + 28189.

It is an arithmetic number, because the mean of its divisors is an integer number (99231814).

Almost surely, 2^396885439 is an apocalyptic number.

396885439 is a deficient number, since it is larger than the sum of its proper divisors (41817).

396885439 is a wasteful number, since it uses less digits than its factorization.

396885439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41816.

The product of its digits is 5598720, while the sum is 55.

The square root of 396885439 is about 19921.9838118597. The cubic root of 396885439 is about 734.8889578805. Note that the first 3 decimals are identical.

The spelling of 396885439 in words is "three hundred ninety-six million, eight hundred eighty-five thousand, four hundred thirty-nine".