2199786989 has 2 divisors, whose sum is σ = 2199786990. Its totient is φ = 2199786988.

The previous prime is 2199786983. The next prime is 2199787019. The reversal of 2199786989 is 9896879912.

2199786989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1441720900 + 758066089 = 37970^2 + 27533^2 .

It is a cyclic number.

It is not a de Polignac number, because 2199786989 - 2⁴ = 2199786973 is a prime.

It is a super-2 number, since 2×2199786989² = 9678125593947372242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2199786983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1099893494 + 1099893495.

It is an arithmetic number, because the mean of its divisors is an integer number (1099893495).

Almost surely, 2^2199786989 is an apocalyptic number.

It is an amenable number.

2199786989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2199786989 is an equidigital number, since it uses as much as digits as its factorization.

2199786989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35271936, while the sum is 68.

The square root of 2199786989 is about 46901.8868383778. The cubic root of 2199786989 is about 1300.5494696959.

The spelling of 2199786989 in words is "two billion, one hundred ninety-nine million, seven hundred eighty-six thousand, nine hundred eighty-nine".