2169539 has 2 divisors, whose sum is σ = 2169540. Its totient is φ = 2169538.

The previous prime is 2169529. The next prime is 2169571. The reversal of 2169539 is 9359612.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2169539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2169499 and 2169508.

It is not a weakly prime, because it can be changed into another prime (2169509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1084769 + 1084770.

It is an arithmetic number, because the mean of its divisors is an integer number (1084770).

2^2169539 is an apocalyptic number.

2169539 is a deficient number, since it is larger than the sum of its proper divisors (1).

2169539 is an equidigital number, since it uses as much as digits as its factorization.

2169539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14580, while the sum is 35.

The square root of 2169539 is about 1472.9355043586. The cubic root of 2169539 is about 129.4560904188.

The spelling of 2169539 in words is "two million, one hundred sixty-nine thousand, five hundred thirty-nine".