2650409 has 2 divisors, whose sum is σ = 2650410. Its totient is φ = 2650408.

The previous prime is 2650399. The next prime is 2650429. The reversal of 2650409 is 9040562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2650384 + 25 = 1628^2 + 5^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2650409 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2650429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1325204 + 1325205.

It is an arithmetic number, because the mean of its divisors is an integer number (1325205).

2^2650409 is an apocalyptic number.

It is an amenable number.

2650409 is a deficient number, since it is larger than the sum of its proper divisors (1).

2650409 is an equidigital number, since it uses as much as digits as its factorization.

2650409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 2650409 is about 1628.0076781146. The cubic root of 2650409 is about 138.3898693120.

The spelling of 2650409 in words is "two million, six hundred fifty thousand, four hundred nine".