3889969 has 2 divisors, whose sum is σ = 3889970. Its totient is φ = 3889968.

The previous prime is 3889939. The next prime is 3889993. The reversal of 3889969 is 9699883.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3659569 + 230400 = 1913^2 + 480^2 .

It is a cyclic number.

It is not a de Polignac number, because 3889969 - 2⁵ = 3889937 is a prime.

It is a super-2 number, since 2×3889969² = 30263717641922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3889939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1944984 + 1944985.

It is an arithmetic number, because the mean of its divisors is an integer number (1944985).

Almost surely, 2^3889969 is an apocalyptic number.

It is an amenable number.

3889969 is a deficient number, since it is larger than the sum of its proper divisors (1).

3889969 is an equidigital number, since it uses as much as digits as its factorization.

3889969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 52.

The square root of 3889969 is about 1972.3004335040. The cubic root of 3889969 is about 157.2710236163.

The spelling of 3889969 in words is "three million, eight hundred eighty-nine thousand, nine hundred sixty-nine".