3291397 has 4 divisors (see below), whose sum is σ = 3296160. Its totient is φ = 3286636.

The previous prime is 3291391. The next prime is 3291401. The reversal of 3291397 is 7931923.

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 cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3291397 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 (3291391) 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, 1123 + ... + 2800.

It is an arithmetic number, because the mean of its divisors is an integer number (824040).

Almost surely, 2^3291397 is an apocalyptic number.

It is an amenable number.

3291397 is a deficient number, since it is larger than the sum of its proper divisors (4763).

3291397 is an equidigital number, since it uses as much as digits as its factorization.

3291397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4762.

The product of its digits is 10206, while the sum is 34.

The square root of 3291397 is about 1814.2207693663. The cubic root of 3291397 is about 148.7510670074.

The spelling of 3291397 in words is "three million, two hundred ninety-one thousand, three hundred ninety-seven".