3256409 has 8 divisors (see below), whose sum is σ = 3659712. Its totient is φ = 2874960.

The previous prime is 3256399. The next prime is 3256411. The reversal of 3256409 is 9046523.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3256409 - 2²⁰ = 2207833 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

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 7 ways as a sum of consecutive naturals, for example, 5147 + ... + 5744.

It is an arithmetic number, because the mean of its divisors is an integer number (457464).

Almost surely, 2^3256409 is an apocalyptic number.

It is an amenable number.

3256409 is a deficient number, since it is larger than the sum of its proper divisors (403303).

3256409 is a wasteful number, since it uses less digits than its factorization.

3256409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10927.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 3256409 is about 1804.5522990482. The cubic root of 3256409 is about 148.2221068584. Note that the first 3 decimals are identical.

The spelling of 3256409 in words is "three million, two hundred fifty-six thousand, four hundred nine".