2699989 has 2 divisors, whose sum is σ = 2699990. Its totient is φ = 2699988.

The previous prime is 2699981. The next prime is 2699999. The reversal of 2699989 is 9899962.

2699989 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., 1782225 + 917764 = 1335^2 + 958^2 .

It is a cyclic number.

It is not a de Polignac number, because 2699989 - 2³ = 2699981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2699981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1349994 + 1349995.

It is an arithmetic number, because the mean of its divisors is an integer number (1349995).

2^2699989 is an apocalyptic number.

It is an amenable number.

2699989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2699989 is an equidigital number, since it uses as much as digits as its factorization.

2699989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 629856, while the sum is 52.

The square root of 2699989 is about 1643.1643253187. The cubic root of 2699989 is about 139.2474759064.

The spelling of 2699989 in words is "two million, six hundred ninety-nine thousand, nine hundred eighty-nine".