2129859 has 12 divisors (see below), whose sum is σ = 3112200. Its totient is φ = 1403424.

The previous prime is 2129851. The next prime is 2129861. The reversal of 2129859 is 9589212.

It is not a de Polignac number, because 2129859 - 2³ = 2129851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2129851) 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, 529 + ... + 2130.

It is an arithmetic number, because the mean of its divisors is an integer number (259350).

2^2129859 is an apocalyptic number.

2129859 is a deficient number, since it is larger than the sum of its proper divisors (982341).

2129859 is a wasteful number, since it uses less digits than its factorization.

2129859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2754 (or 2751 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 2129859 is about 1459.4036453291. The cubic root of 2129859 is about 128.6619959765.

The spelling of 2129859 in words is "two million, one hundred twenty-nine thousand, eight hundred fifty-nine".