439873487 has 4 divisors (see below), whose sum is σ = 465748416. Its totient is φ = 413998560.

The previous prime is 439873481. The next prime is 439873519. The reversal of 439873487 is 784378934.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 784378934 = 2 ⋅392189467.

It is a cyclic number.

It is not a de Polignac number, because 439873487 - 2²² = 435679183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (439873481) 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, 12937439 + ... + 12937472.

It is an arithmetic number, because the mean of its divisors is an integer number (116437104).

Almost surely, 2^439873487 is an apocalyptic number.

439873487 is a deficient number, since it is larger than the sum of its proper divisors (25874929).

439873487 is a wasteful number, since it uses less digits than its factorization.

439873487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25874928.

The product of its digits is 4064256, while the sum is 53.

The square root of 439873487 is about 20973.1611112870. The cubic root of 439873487 is about 760.5175877516.

It can be divided in two parts, 43987 and 3487, that added together give a palindrome (47474).

The spelling of 439873487 in words is "four hundred thirty-nine million, eight hundred seventy-three thousand, four hundred eighty-seven".