2815939 has 4 divisors (see below), whose sum is σ = 3218224. Its totient is φ = 2413656.

The previous prime is 2815937. The next prime is 2815963. The reversal of 2815939 is 9395182.

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

It is not a de Polignac number, because 2815939 - 2¹ = 2815937 is a prime.

It is a d-powerful number, because it can be written as 2²¹ + 8³ + 1 + 5⁵ + 9⁴ + 3¹¹ + 9⁶ .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2815898 and 2815907.

It is not an unprimeable number, because it can be changed into a prime (2815937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201132 + ... + 201145.

It is an arithmetic number, because the mean of its divisors is an integer number (804556).

2^2815939 is an apocalyptic number.

2815939 is a deficient number, since it is larger than the sum of its proper divisors (402285).

2815939 is an equidigital number, since it uses as much as digits as its factorization.

2815939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402284.

The product of its digits is 19440, while the sum is 37.

The square root of 2815939 is about 1678.0759815932. The cubic root of 2815939 is about 141.2129137501.

The spelling of 2815939 in words is "two million, eight hundred fifteen thousand, nine hundred thirty-nine".