439489331 has 2 divisors, whose sum is σ = 439489332. Its totient is φ = 439489330.

The previous prime is 439489277. The next prime is 439489333. The reversal of 439489331 is 133984934.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 439489331 - 2²⁶ = 372380467 is a prime.

It is a super-2 number, since 2×439489331² = 386301744125655122, which contains 22 as substring.

Together with 439489333, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (439489333) 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 as a sum of consecutive naturals, namely, 219744665 + 219744666.

It is an arithmetic number, because the mean of its divisors is an integer number (219744666).

Almost surely, 2^439489331 is an apocalyptic number.

439489331 is a deficient number, since it is larger than the sum of its proper divisors (1).

439489331 is an equidigital number, since it uses as much as digits as its factorization.

439489331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 44.

The square root of 439489331 is about 20964.0008347643. Note that the first 3 decimals coincide. The cubic root of 439489331 is about 760.2961282528.

The spelling of 439489331 in words is "four hundred thirty-nine million, four hundred eighty-nine thousand, three hundred thirty-one".