3491197 has 2 divisors, whose sum is σ = 3491198. Its totient is φ = 3491196.

The previous prime is 3491183. The next prime is 3491227. The reversal of 3491197 is 7911943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3189796 + 301401 = 1786^2 + 549^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3491197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3491897) 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 as a sum of consecutive naturals, namely, 1745598 + 1745599.

It is an arithmetic number, because the mean of its divisors is an integer number (1745599).

Almost surely, 2^3491197 is an apocalyptic number.

It is an amenable number.

3491197 is a deficient number, since it is larger than the sum of its proper divisors (1).

3491197 is an equidigital number, since it uses as much as digits as its factorization.

3491197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 34.

The square root of 3491197 is about 1868.4745114665. The cubic root of 3491197 is about 151.7020508084.

The spelling of 3491197 in words is "three million, four hundred ninety-one thousand, one hundred ninety-seven".