439853649 has 4 divisors (see below), whose sum is σ = 586471536. Its totient is φ = 293235764.

The previous prime is 439853647. The next prime is 439853663. The reversal of 439853649 is 946358934.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 439853649 - 2¹ = 439853647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (439853641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73308939 + ... + 73308944.

It is an arithmetic number, because the mean of its divisors is an integer number (146617884).

Almost surely, 2^439853649 is an apocalyptic number.

It is an amenable number.

439853649 is a deficient number, since it is larger than the sum of its proper divisors (146617887).

439853649 is a wasteful number, since it uses less digits than its factorization.

439853649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146617886.

The product of its digits is 2799360, while the sum is 51.

The square root of 439853649 is about 20972.6881681867. The cubic root of 439853649 is about 760.5061546349.

The spelling of 439853649 in words is "four hundred thirty-nine million, eight hundred fifty-three thousand, six hundred forty-nine".