2115829 has 2 divisors, whose sum is σ = 2115830. Its totient is φ = 2115828.

The previous prime is 2115823. The next prime is 2115847. The reversal of 2115829 is 9285112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1435204 + 680625 = 1198^2 + 825^2 .

It is a cyclic number.

It is not a de Polignac number, because 2115829 - 2⁹ = 2115317 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2115797 and 2115806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2115823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1057914 + 1057915.

It is an arithmetic number, because the mean of its divisors is an integer number (1057915).

2^2115829 is an apocalyptic number.

It is an amenable number.

2115829 is a deficient number, since it is larger than the sum of its proper divisors (1).

2115829 is an equidigital number, since it uses as much as digits as its factorization.

2115829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 28.

The square root of 2115829 is about 1454.5889453725. The cubic root of 2115829 is about 128.3788620528.

The spelling of 2115829 in words is "two million, one hundred fifteen thousand, eight hundred twenty-nine".