2171039 has 16 divisors (see below), whose sum is σ = 2503872. Its totient is φ = 1867008.

The previous prime is 2171021. The next prime is 2171077. The reversal of 2171039 is 9301712.

It is not a de Polignac number, because 2171039 - 2⁸ = 2170783 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2171089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15779 + ... + 15915.

It is an arithmetic number, because the mean of its divisors is an integer number (156492).

2^2171039 is an apocalyptic number.

2171039 is a deficient number, since it is larger than the sum of its proper divisors (332833).

2171039 is a wasteful number, since it uses less digits than its factorization.

2171039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 2171039 is about 1473.4446036414. Note that the first 3 decimals coincide. The cubic root of 2171039 is about 129.4859184760.

The spelling of 2171039 in words is "two million, one hundred seventy-one thousand, thirty-nine".