2172039 has 8 divisors (see below), whose sum is σ = 3066480. Its totient is φ = 1362816.

The previous prime is 2172031. The next prime is 2172041. The reversal of 2172039 is 9302712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2172039 - 2³ = 2172031 is a prime.

2172039 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21244 + ... + 21345.

It is an arithmetic number, because the mean of its divisors is an integer number (383310).

2^2172039 is an apocalyptic number.

2172039 is a deficient number, since it is larger than the sum of its proper divisors (894441).

2172039 is a wasteful number, since it uses less digits than its factorization.

2172039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42609.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 2172039 is about 1473.7839054624. The cubic root of 2172039 is about 129.5057962155.

The spelling of 2172039 in words is "two million, one hundred seventy-two thousand, thirty-nine".