7683989 has 2 divisors, whose sum is σ = 7683990. Its totient is φ = 7683988.

The previous prime is 7683967. The next prime is 7684007. The reversal of 7683989 is 9893867.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7344100 + 339889 = 2710^2 + 583^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7683989 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7683089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3841994 + 3841995.

It is an arithmetic number, because the mean of its divisors is an integer number (3841995).

Almost surely, 2^7683989 is an apocalyptic number.

It is an amenable number.

7683989 is a deficient number, since it is larger than the sum of its proper divisors (1).

7683989 is an equidigital number, since it uses as much as digits as its factorization.

7683989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 50.

The square root of 7683989 is about 2772.0009018758. Note that the first 3 decimals coincide. The cubic root of 7683989 is about 197.3311187840.

The spelling of 7683989 in words is "seven million, six hundred eighty-three thousand, nine hundred eighty-nine".