2989409 has 2 divisors, whose sum is σ = 2989410. Its totient is φ = 2989408.

The previous prime is 2989391. The next prime is 2989417. The reversal of 2989409 is 9049892.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2411809 + 577600 = 1553^2 + 760^2 .

It is a cyclic number.

It is not a de Polignac number, because 2989409 - 2²⁰ = 1940833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2989429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1494704 + 1494705.

It is an arithmetic number, because the mean of its divisors is an integer number (1494705).

2^2989409 is an apocalyptic number.

It is an amenable number.

2989409 is a deficient number, since it is larger than the sum of its proper divisors (1).

2989409 is an equidigital number, since it uses as much as digits as its factorization.

2989409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 2989409 is about 1728.9907460712. The cubic root of 2989409 is about 144.0550361901.

The spelling of 2989409 in words is "two million, nine hundred eighty-nine thousand, four hundred nine".