3490891 has 2 divisors, whose sum is σ = 3490892. Its totient is φ = 3490890.

The previous prime is 3490873. The next prime is 3490937. The reversal of 3490891 is 1980943.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3490891 - 2⁵ = 3490859 is a prime.

It is not a weakly prime, because it can be changed into another prime (3490811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1745445 + 1745446.

It is an arithmetic number, because the mean of its divisors is an integer number (1745446).

Almost surely, 2^3490891 is an apocalyptic number.

3490891 is a deficient number, since it is larger than the sum of its proper divisors (1).

3490891 is an equidigital number, since it uses as much as digits as its factorization.

3490891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 3490891 is about 1868.3926246911. The cubic root of 3490891 is about 151.6976185002.

The spelling of 3490891 in words is "three million, four hundred ninety thousand, eight hundred ninety-one".