3256439 has 4 divisors (see below), whose sum is σ = 3368760. Its totient is φ = 3144120.

The previous prime is 3256427. The next prime is 3256441. The reversal of 3256439 is 9346523.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9346523 = 43 ⋅217361.

It is a cyclic number.

It is not a de Polignac number, because 3256439 - 2⁴ = 3256423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3256499) 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, 56117 + ... + 56174.

It is an arithmetic number, because the mean of its divisors is an integer number (842190).

Almost surely, 2^3256439 is an apocalyptic number.

3256439 is a deficient number, since it is larger than the sum of its proper divisors (112321).

3256439 is a wasteful number, since it uses less digits than its factorization.

3256439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112320.

The product of its digits is 19440, while the sum is 32.

The square root of 3256439 is about 1804.5606113401. The cubic root of 3256439 is about 148.2225620274. Note that the first 3 decimals are identical.

The spelling of 3256439 in words is "three million, two hundred fifty-six thousand, four hundred thirty-nine".