439473385 has 16 divisors (see below), whose sum is σ = 572970384. Its totient is φ = 321656832.

The previous prime is 439473379. The next prime is 439473389. The reversal of 439473385 is 583374934.

It can be written as a sum of positive squares in 8 ways, for example, as 42029289 + 397444096 = 6483^2 + 19936^2 .

It is a cyclic number.

It is not a de Polignac number, because 439473385 - 2¹⁹ = 438949097 is a prime.

It is a super-2 number, since 2×439473385² = 386273712246716450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (439473389) 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, 22572 + ... + 37261.

It is an arithmetic number, because the mean of its divisors is an integer number (35810649).

Almost surely, 2^439473385 is an apocalyptic number.

It is an amenable number.

439473385 is a deficient number, since it is larger than the sum of its proper divisors (133496999).

439473385 is a wasteful number, since it uses less digits than its factorization.

439473385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59964.

The product of its digits is 1088640, while the sum is 46.

The square root of 439473385 is about 20963.6205126882. The cubic root of 439473385 is about 760.2869328618.

The spelling of 439473385 in words is "four hundred thirty-nine million, four hundred seventy-three thousand, three hundred eighty-five".