439876384469 has 2 divisors, whose sum is σ = 439876384470. Its totient is φ = 439876384468.

The previous prime is 439876384433. The next prime is 439876384499. The reversal of 439876384469 is 964483678934.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 438855901444 + 1020483025 = 662462^2 + 31945^2 .

It is a cyclic number.

It is not a de Polignac number, because 439876384469 - 2¹² = 439876380373 is a prime.

It is a super-2 number, since 2×439876384469² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (439876384499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219938192234 + 219938192235.

It is an arithmetic number, because the mean of its divisors is an integer number (219938192235).

Almost surely, 2^439876384469 is an apocalyptic number.

It is an amenable number.

439876384469 is a deficient number, since it is larger than the sum of its proper divisors (1).

439876384469 is an equidigital number, since it uses as much as digits as its factorization.

439876384469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 752467968, while the sum is 71.

The spelling of 439876384469 in words is "four hundred thirty-nine billion, eight hundred seventy-six million, three hundred eighty-four thousand, four hundred sixty-nine".