2102489 has 2 divisors, whose sum is σ = 2102490. Its totient is φ = 2102488.

The previous prime is 2102479. The next prime is 2102497. The reversal of 2102489 is 9842012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2059225 + 43264 = 1435^2 + 208^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2102489 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2102459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051244 + 1051245.

It is an arithmetic number, because the mean of its divisors is an integer number (1051245).

2^2102489 is an apocalyptic number.

It is an amenable number.

2102489 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102489 is an equidigital number, since it uses as much as digits as its factorization.

2102489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 2102489 is about 1449.9962068916. The cubic root of 2102489 is about 128.1084895640.

The spelling of 2102489 in words is "two million, one hundred two thousand, four hundred eighty-nine".