3247409 has 4 divisors (see below), whose sum is σ = 3542640. Its totient is φ = 2952180.

The previous prime is 3247399. The next prime is 3247417. The reversal of 3247409 is 9047423.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-3247409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3247429) 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, 147599 + ... + 147620.

It is an arithmetic number, because the mean of its divisors is an integer number (885660).

Almost surely, 2^3247409 is an apocalyptic number.

It is an amenable number.

3247409 is a deficient number, since it is larger than the sum of its proper divisors (295231).

3247409 is a wasteful number, since it uses less digits than its factorization.

3247409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295230.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 3247409 is about 1802.0568803453. The cubic root of 3247409 is about 148.0854297382.

The spelling of 3247409 in words is "three million, two hundred forty-seven thousand, four hundred nine".