2606449289 has 2 divisors, whose sum is σ = 2606449290. Its totient is φ = 2606449288.

The previous prime is 2606449271. The next prime is 2606449303. The reversal of 2606449289 is 9829446062.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1706929225 + 899520064 = 41315^2 + 29992^2 .

It is a cyclic number.

It is not a de Polignac number, because 2606449289 - 2¹⁶ = 2606383753 is a prime.

It is a super-2 number, since 2×2606449289² = 13587155792257211042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2606449189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1303224644 + 1303224645.

It is an arithmetic number, because the mean of its divisors is an integer number (1303224645).

Almost surely, 2^2606449289 is an apocalyptic number.

It is an amenable number.

2606449289 is a deficient number, since it is larger than the sum of its proper divisors (1).

2606449289 is an equidigital number, since it uses as much as digits as its factorization.

2606449289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1492992, while the sum is 50.

The square root of 2606449289 is about 51053.3964492080. The cubic root of 2606449289 is about 1376.2048791359.

The spelling of 2606449289 in words is "two billion, six hundred six million, four hundred forty-nine thousand, two hundred eighty-nine".