3894213269 has 2 divisors, whose sum is σ = 3894213270. Its totient is φ = 3894213268.

The previous prime is 3894213263. The next prime is 3894213287. The reversal of 3894213269 is 9623124983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3488674225 + 405539044 = 59065^2 + 20138^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3894213269 is a prime.

It is a super-2 number, since 2×3894213269² = 30329793968911332722, which contains 22 as substring.

It is a Sophie Germain 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 (3894213263) 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, 1947106634 + 1947106635.

It is an arithmetic number, because the mean of its divisors is an integer number (1947106635).

Almost surely, 2^3894213269 is an apocalyptic number.

It is an amenable number.

3894213269 is a deficient number, since it is larger than the sum of its proper divisors (1).

3894213269 is an equidigital number, since it uses as much as digits as its factorization.

3894213269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 47.

The square root of 3894213269 is about 62403.6318574488. The cubic root of 3894213269 is about 1573.2820127086.

The spelling of 3894213269 in words is "three billion, eight hundred ninety-four million, two hundred thirteen thousand, two hundred sixty-nine".