439773947 has 4 divisors (see below), whose sum is σ = 442725600. Its totient is φ = 436822296.

The previous prime is 439773931. The next prime is 439773953. The reversal of 439773947 is 749377934.

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

It is a cyclic number.

It is not a de Polignac number, because 439773947 - 2⁴ = 439773931 is a prime.

It is a super-2 number, since 2×439773947² = 386802248919917618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (439773977) 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, 1475603 + ... + 1475900.

It is an arithmetic number, because the mean of its divisors is an integer number (110681400).

Almost surely, 2^439773947 is an apocalyptic number.

439773947 is a deficient number, since it is larger than the sum of its proper divisors (2951653).

439773947 is a wasteful number, since it uses less digits than its factorization.

439773947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2951652.

The product of its digits is 4000752, while the sum is 53.

The square root of 439773947 is about 20970.7879441856. The cubic root of 439773947 is about 760.4602169894.

The spelling of 439773947 in words is "four hundred thirty-nine million, seven hundred seventy-three thousand, nine hundred forty-seven".