13802989 has 2 divisors, whose sum is σ = 13802990. Its totient is φ = 13802988.

The previous prime is 13802981. The next prime is 13803011. The reversal of 13802989 is 98920831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13801225 + 1764 = 3715^2 + 42^2 .

It is an emirp because it is prime and its reverse (98920831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13802989 - 2³ = 13802981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13802981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6901494 + 6901495.

It is an arithmetic number, because the mean of its divisors is an integer number (6901495).

Almost surely, 2^13802989 is an apocalyptic number.

It is an amenable number.

13802989 is a deficient number, since it is larger than the sum of its proper divisors (1).

13802989 is an equidigital number, since it uses as much as digits as its factorization.

13802989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 13802989 is about 3715.2374082957. The cubic root of 13802989 is about 239.8783469108.

The spelling of 13802989 in words is "thirteen million, eight hundred two thousand, nine hundred eighty-nine".