2140609 has 2 divisors, whose sum is σ = 2140610. Its totient is φ = 2140608.

The previous prime is 2140603. The next prime is 2140627. The reversal of 2140609 is 9060412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2002225 + 138384 = 1415^2 + 372^2 .

It is a cyclic number.

It is not a de Polignac number, because 2140609 - 2³ = 2140601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2140609.

It is not a weakly prime, because it can be changed into another prime (2140601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070304 + 1070305.

It is an arithmetic number, because the mean of its divisors is an integer number (1070305).

2^2140609 is an apocalyptic number.

It is an amenable number.

2140609 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140609 is an equidigital number, since it uses as much as digits as its factorization.

2140609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 2140609 is about 1463.0820209407. The cubic root of 2140609 is about 128.8780972876.

The spelling of 2140609 in words is "two million, one hundred forty thousand, six hundred nine".