2015939 has 4 divisors (see below), whose sum is σ = 2038680. Its totient is φ = 1993200.

The previous prime is 2015933. The next prime is 2015941. The reversal of 2015939 is 9395102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2015939 - 2¹² = 2011843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2015933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11237 + ... + 11414.

It is an arithmetic number, because the mean of its divisors is an integer number (509670).

2^2015939 is an apocalyptic number.

2015939 is a deficient number, since it is larger than the sum of its proper divisors (22741).

2015939 is an equidigital number, since it uses as much as digits as its factorization.

2015939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22740.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 2015939 is about 1419.8376667774. The cubic root of 2015939 is about 126.3259178069.

The spelling of 2015939 in words is "two million, fifteen thousand, nine hundred thirty-nine".