439424643 has 16 divisors (see below), whose sum is σ = 682235136. Its totient is φ = 246361440.

The previous prime is 439424641. The next prime is 439424707. The reversal of 439424643 is 346424934.

It is a happy number.

It is not a de Polignac number, because 439424643 - 2¹ = 439424641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (439424641) 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, 196293 + ... + 198518.

It is an arithmetic number, because the mean of its divisors is an integer number (42639696).

Almost surely, 2^439424643 is an apocalyptic number.

439424643 is a deficient number, since it is larger than the sum of its proper divisors (242810493).

439424643 is a wasteful number, since it uses less digits than its factorization.

439424643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394874.

The product of its digits is 248832, while the sum is 39.

The square root of 439424643 is about 20962.4579427127. The cubic root of 439424643 is about 760.2588240107.

The spelling of 439424643 in words is "four hundred thirty-nine million, four hundred twenty-four thousand, six hundred forty-three".