2159807 has 8 divisors (see below), whose sum is σ = 2349984. Its totient is φ = 1973088.

The previous prime is 2159789. The next prime is 2159809. The reversal of 2159807 is 7089512.

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

It is not a de Polignac number, because 2159807 - 2⁸ = 2159551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2159809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 533 + ... + 2145.

It is an arithmetic number, because the mean of its divisors is an integer number (293748).

2^2159807 is an apocalyptic number.

2159807 is a deficient number, since it is larger than the sum of its proper divisors (190177).

2159807 is a wasteful number, since it uses less digits than its factorization.

2159807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1729.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 2159807 is about 1469.6281842697. The cubic root of 2159807 is about 129.2622312327.

The spelling of 2159807 in words is "two million, one hundred fifty-nine thousand, eight hundred seven".