3591971 has 4 divisors (see below), whose sum is σ = 3596712. Its totient is φ = 3587232.

The previous prime is 3591967. The next prime is 3591977. The reversal of 3591971 is 1791953.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3591971 - 2² = 3591967 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3591977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 950 + ... + 2843.

It is an arithmetic number, because the mean of its divisors is an integer number (899178).

Almost surely, 2^3591971 is an apocalyptic number.

3591971 is a deficient number, since it is larger than the sum of its proper divisors (4741).

3591971 is an equidigital number, since it uses as much as digits as its factorization.

3591971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4740.

The product of its digits is 8505, while the sum is 35.

The square root of 3591971 is about 1895.2495877852. The cubic root of 3591971 is about 153.1478628086.

The spelling of 3591971 in words is "three million, five hundred ninety-one thousand, nine hundred seventy-one".