3091491 has 12 divisors (see below), whose sum is σ = 4809168. Its totient is φ = 1902384.

The previous prime is 3091489. The next prime is 3091493. The reversal of 3091491 is 1941903.

3091491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3091489) and next prime (3091493).

It is not a de Polignac number, because 3091491 - 2¹ = 3091489 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (3091493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13095 + ... + 13328.

It is an arithmetic number, because the mean of its divisors is an integer number (400764).

Almost surely, 2^3091491 is an apocalyptic number.

3091491 is a deficient number, since it is larger than the sum of its proper divisors (1717677).

3091491 is a wasteful number, since it uses less digits than its factorization.

3091491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26442 (or 26439 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 3091491 is about 1758.2636321098. The cubic root of 3091491 is about 145.6764430482.

The spelling of 3091491 in words is "three million, ninety-one thousand, four hundred ninety-one".