2146009 has 2 divisors, whose sum is σ = 2146010. Its totient is φ = 2146008.

The previous prime is 2146003. The next prime is 2146043. The reversal of 2146009 is 9006412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1550025 + 595984 = 1245^2 + 772^2 .

It is a cyclic number.

It is not a de Polignac number, because 2146009 - 2⁵ = 2145977 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2146003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1073004 + 1073005.

It is an arithmetic number, because the mean of its divisors is an integer number (1073005).

2^2146009 is an apocalyptic number.

It is an amenable number.

2146009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2146009 is an equidigital number, since it uses as much as digits as its factorization.

2146009 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 2146009 is about 1464.9262780086. The cubic root of 2146009 is about 128.9863775852.

The spelling of 2146009 in words is "two million, one hundred forty-six thousand, nine".