439689216 has 56 divisors (see below), whose sum is σ = 1172498544. Its totient is φ = 146554880.

The previous prime is 439689209. The next prime is 439689223. The reversal of 439689216 is 612986934.

It is an interprime number because it is at equal distance from previous prime (439689209) and next prime (439689223).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15631 + ... + 33521.

It is an arithmetic number, because the mean of its divisors is an integer number (20937474).

Almost surely, 2^439689216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 439689216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (586249272).

439689216 is an abundant number, since it is smaller than the sum of its proper divisors (732809328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

439689216 is an equidigital number, since it uses as much as digits as its factorization.

439689216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17920 (or 17896 counting only the distinct ones).

The product of its digits is 559872, while the sum is 48.

The square root of 439689216 is about 20968.7676318853. The cubic root of 439689216 is about 760.4113747045.

The spelling of 439689216 in words is "four hundred thirty-nine million, six hundred eighty-nine thousand, two hundred sixteen".