439348769 has 2 divisors, whose sum is σ = 439348770. Its totient is φ = 439348768.

The previous prime is 439348757. The next prime is 439348801. The reversal of 439348769 is 967843934.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 419430400 + 19918369 = 20480^2 + 4463^2 .

It is a cyclic number.

It is not a de Polignac number, because 439348769 - 2⁸ = 439348513 is a prime.

It is a super-2 number, since 2×439348769² = 386054681643630722, 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 439348769.

It is not a weakly prime, because it can be changed into another prime (439348069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219674384 + 219674385.

It is an arithmetic number, because the mean of its divisors is an integer number (219674385).

Almost surely, 2^439348769 is an apocalyptic number.

It is an amenable number.

439348769 is a deficient number, since it is larger than the sum of its proper divisors (1).

439348769 is an equidigital number, since it uses as much as digits as its factorization.

439348769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3919104, while the sum is 53.

The square root of 439348769 is about 20960.6481054380. The cubic root of 439348769 is about 760.2150643663.

The spelling of 439348769 in words is "four hundred thirty-nine million, three hundred forty-eight thousand, seven hundred sixty-nine".