439274669 has 2 divisors, whose sum is σ = 439274670. Its totient is φ = 439274668.

The previous prime is 439274663. The next prime is 439274809. The reversal of 439274669 is 966472934.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 286455625 + 152819044 = 16925^2 + 12362^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-439274669 is a prime.

It is a super-2 number, since 2×439274669² = 385924469650119122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (439274663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219637334 + 219637335.

It is an arithmetic number, because the mean of its divisors is an integer number (219637335).

Almost surely, 2^439274669 is an apocalyptic number.

It is an amenable number.

439274669 is a deficient number, since it is larger than the sum of its proper divisors (1).

439274669 is an equidigital number, since it uses as much as digits as its factorization.

439274669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1959552, while the sum is 50.

The square root of 439274669 is about 20958.8804328857. The cubic root of 439274669 is about 760.1723229973.

The spelling of 439274669 in words is "four hundred thirty-nine million, two hundred seventy-four thousand, six hundred sixty-nine".