439428067 has 16 divisors (see below), whose sum is σ = 501760000. Its totient is φ = 381482784.

The previous prime is 439428061. The next prime is 439428089. The reversal of 439428067 is 760824934.

It is a cyclic number.

It is not a de Polignac number, because 439428067 - 2⁷ = 439427939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (439428061) 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, 27934 + ... + 40732.

It is an arithmetic number, because the mean of its divisors is an integer number (31360000).

Almost surely, 2^439428067 is an apocalyptic number.

439428067 is a deficient number, since it is larger than the sum of its proper divisors (62331933).

439428067 is a wasteful number, since it uses less digits than its factorization.

439428067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12970.

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 439428067 is about 20962.5396123657. The cubic root of 439428067 is about 760.2607986530.

The spelling of 439428067 in words is "four hundred thirty-nine million, four hundred twenty-eight thousand, sixty-seven".