2159907 has 12 divisors (see below), whose sum is σ = 3012744. Its totient is φ = 1376320.

The previous prime is 2159903. The next prime is 2159923. The reversal of 2159907 is 7099512.

It is not a de Polignac number, because 2159907 - 2² = 2159903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2159903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 907 + ... + 2267.

It is an arithmetic number, because the mean of its divisors is an integer number (251062).

2^2159907 is an apocalyptic number.

2159907 is a deficient number, since it is larger than the sum of its proper divisors (852837).

2159907 is a wasteful number, since it uses less digits than its factorization.

2159907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410 (or 1387 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 33.

The square root of 2159907 is about 1469.6622060868. The cubic root of 2159907 is about 129.2642261676.

The spelling of 2159907 in words is "two million, one hundred fifty-nine thousand, nine hundred seven".