439045669 has 2 divisors, whose sum is σ = 439045670. Its totient is φ = 439045668.

The previous prime is 439045667. The next prime is 439045729. The reversal of 439045669 is 966540934.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 366148225 + 72897444 = 19135^2 + 8538^2 .

It is a cyclic number.

It is not a de Polignac number, because 439045669 - 2¹ = 439045667 is a prime.

It is a super-2 number, since 2×439045669² = 385522198935315122, which contains 22 as substring.

Together with 439045667, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (439045661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219522834 + 219522835.

It is an arithmetic number, because the mean of its divisors is an integer number (219522835).

Almost surely, 2^439045669 is an apocalyptic number.

It is an amenable number.

439045669 is a deficient number, since it is larger than the sum of its proper divisors (1).

439045669 is an equidigital number, since it uses as much as digits as its factorization.

439045669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 699840, while the sum is 46.

The square root of 439045669 is about 20953.4166426385. The cubic root of 439045669 is about 760.0402038981.

The spelling of 439045669 in words is "four hundred thirty-nine million, forty-five thousand, six hundred sixty-nine".