439747131 has 16 divisors (see below), whose sum is σ = 596090880. Its totient is φ = 288319680.

The previous prime is 439747117. The next prime is 439747151. The reversal of 439747131 is 131747934.

It is not a de Polignac number, because 439747131 - 2¹⁰ = 439746107 is a prime.

It is a super-2 number, since 2×439747131² = 386755078445462322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 439747131.

It is not an unprimeable number, because it can be changed into a prime (439747151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46686 + ... + 55308.

It is an arithmetic number, because the mean of its divisors is an integer number (37255680).

Almost surely, 2^439747131 is an apocalyptic number.

439747131 is a deficient number, since it is larger than the sum of its proper divisors (156343749).

439747131 is a wasteful number, since it uses less digits than its factorization.

439747131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8906.

The product of its digits is 63504, while the sum is 39.

The square root of 439747131 is about 20970.1485688585. The cubic root of 439747131 is about 760.4447598697. Note that the first 3 decimals are identical.

The spelling of 439747131 in words is "four hundred thirty-nine million, seven hundred forty-seven thousand, one hundred thirty-one".