439039481 has 2 divisors, whose sum is σ = 439039482. Its totient is φ = 439039480.

The previous prime is 439039463. The next prime is 439039499. The reversal of 439039481 is 184930934.

It is a balanced prime because it is at equal distance from previous prime (439039463) and next prime (439039499).

It can be written as a sum of positive squares in only one way, i.e., 421891600 + 17147881 = 20540^2 + 4141^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-439039481 is a prime.

It is a super-2 number, since 2×439039481² = 385511331753498722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (439039451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219519740 + 219519741.

It is an arithmetic number, because the mean of its divisors is an integer number (219519741).

Almost surely, 2^439039481 is an apocalyptic number.

It is an amenable number.

439039481 is a deficient number, since it is larger than the sum of its proper divisors (1).

439039481 is an equidigital number, since it uses as much as digits as its factorization.

439039481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 439039481 is about 20953.2689812354. The cubic root of 439039481 is about 760.0366331603.

The spelling of 439039481 in words is "four hundred thirty-nine million, thirty-nine thousand, four hundred eighty-one".