2689943 has 2 divisors, whose sum is σ = 2689944. Its totient is φ = 2689942.

The previous prime is 2689931. The next prime is 2689957. The reversal of 2689943 is 3499862.

It is a happy number.

2689943 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2689943 is a prime.

It is a d-powerful number, because it can be written as 2²¹ + 6² + 8³ + 9³ + 9⁵ + 4⁵ + 3¹² .

It is a self number, because there is not a number n which added to its sum of digits gives 2689943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2689903) 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, 1344971 + 1344972.

It is an arithmetic number, because the mean of its divisors is an integer number (1344972).

2^2689943 is an apocalyptic number.

2689943 is a deficient number, since it is larger than the sum of its proper divisors (1).

2689943 is an equidigital number, since it uses as much as digits as its factorization.

2689943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 41.

The square root of 2689943 is about 1640.1045698369. The cubic root of 2689943 is about 139.0745593127.

The spelling of 2689943 in words is "two million, six hundred eighty-nine thousand, nine hundred forty-three".