2069989 has 2 divisors, whose sum is σ = 2069990. Its totient is φ = 2069988.

The previous prime is 2069987. The next prime is 2069999. The reversal of 2069989 is 9899602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1119364 + 950625 = 1058^2 + 975^2 .

It is a cyclic number.

It is not a de Polignac number, because 2069989 - 2¹ = 2069987 is a prime.

Together with 2069987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2069983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1034994 + 1034995.

It is an arithmetic number, because the mean of its divisors is an integer number (1034995).

2^2069989 is an apocalyptic number.

It is an amenable number.

2069989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2069989 is an equidigital number, since it uses as much as digits as its factorization.

2069989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 2069989 is about 1438.7456342245. The cubic root of 2069989 is about 127.4449640721. Note that the first 3 decimals are identical.

The spelling of 2069989 in words is "two million, sixty-nine thousand, nine hundred eighty-nine".