3256839 has 6 divisors (see below), whose sum is σ = 4704336. Its totient is φ = 2171220.

The previous prime is 3256831. The next prime is 3256861. The reversal of 3256839 is 9386523.

It is not a de Polignac number, because 3256839 - 2³ = 3256831 is a prime.

3256839 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3256831) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 180927 + ... + 180944.

It is an arithmetic number, because the mean of its divisors is an integer number (784056).

Almost surely, 2^3256839 is an apocalyptic number.

3256839 is a deficient number, since it is larger than the sum of its proper divisors (1447497).

3256839 is a wasteful number, since it uses less digits than its factorization.

3256839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361877 (or 361874 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 3256839 is about 1804.6714382402. The cubic root of 3256839 is about 148.2286306806.

It can be divided in two parts, 3256 and 839, that added together give a triangular number (4095 = T₉₀).

The spelling of 3256839 in words is "three million, two hundred fifty-six thousand, eight hundred thirty-nine".