439897868 has 12 divisors (see below), whose sum is σ = 796367040. Its totient is φ = 212364432.

The previous prime is 439897867. The next prime is 439897877. The reversal of 439897868 is 868798934.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 439897868.

It is not an unprimeable number, because it can be changed into a prime (439897867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1895996 + ... + 1896227.

It is an arithmetic number, because the mean of its divisors is an integer number (66363920).

Almost surely, 2^439897868 is an apocalyptic number.

It is an amenable number.

439897868 is a deficient number, since it is larger than the sum of its proper divisors (356469172).

439897868 is a wasteful number, since it uses less digits than its factorization.

439897868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3792256 (or 3792254 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 62.

The square root of 439897868 is about 20973.7423460860. The cubic root of 439897868 is about 760.5316386377.

The spelling of 439897868 in words is "four hundred thirty-nine million, eight hundred ninety-seven thousand, eight hundred sixty-eight".