2215839 has 16 divisors (see below), whose sum is σ = 3055104. Its totient is φ = 1428000.

The previous prime is 2215823. The next prime is 2215847. The reversal of 2215839 is 9385122.

It is a happy number.

It is not a de Polignac number, because 2215839 - 2⁴ = 2215823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21462 + ... + 21564.

It is an arithmetic number, because the mean of its divisors is an integer number (190944).

2^2215839 is an apocalyptic number.

2215839 is a deficient number, since it is larger than the sum of its proper divisors (839265).

2215839 is a wasteful number, since it uses less digits than its factorization.

2215839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278.

The product of its digits is 4320, while the sum is 30.

The square root of 2215839 is about 1488.5694474898. The cubic root of 2215839 is about 130.3705208621.

The spelling of 2215839 in words is "two million, two hundred fifteen thousand, eight hundred thirty-nine".