2158959 has 8 divisors (see below), whose sum is σ = 3140352. Its totient is φ = 1308440.

The previous prime is 2158931. The next prime is 2158979. The reversal of 2158959 is 9598512.

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

It is a cyclic number.

It is not a de Polignac number, because 2158959 - 2⁷ = 2158831 is a prime.

It is a super-2 number, since 2×2158959² = 9322207927362, which contains 22 as substring.

2158959 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158909) 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, 32679 + ... + 32744.

It is an arithmetic number, because the mean of its divisors is an integer number (392544).

2^2158959 is an apocalyptic number.

2158959 is a deficient number, since it is larger than the sum of its proper divisors (981393).

2158959 is a wasteful number, since it uses less digits than its factorization.

2158959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65437.

The product of its digits is 32400, while the sum is 39.

The square root of 2158959 is about 1469.3396475968. The cubic root of 2158959 is about 129.2453117083.

The spelling of 2158959 in words is "two million, one hundred fifty-eight thousand, nine hundred fifty-nine".