439828493 has 4 divisors (see below), whose sum is σ = 473661468. Its totient is φ = 405995520.

The previous prime is 439828489. The next prime is 439828507. The reversal of 439828493 is 394828934.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49252324 + 390576169 = 7018^2 + 19763^2 .

It is a cyclic number.

It is not a de Polignac number, because 439828493 - 2² = 439828489 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 (439828463) 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, 16916468 + ... + 16916493.

It is an arithmetic number, because the mean of its divisors is an integer number (118415367).

Almost surely, 2^439828493 is an apocalyptic number.

It is an amenable number.

439828493 is a deficient number, since it is larger than the sum of its proper divisors (33832975).

439828493 is a wasteful number, since it uses less digits than its factorization.

439828493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33832974.

The product of its digits is 1492992, while the sum is 50.

The square root of 439828493 is about 20972.0884272406. The cubic root of 439828493 is about 760.4916561325.

The spelling of 439828493 in words is "four hundred thirty-nine million, eight hundred twenty-eight thousand, four hundred ninety-three".