3912291 has 6 divisors (see below), whose sum is σ = 5651100. Its totient is φ = 2608188.

The previous prime is 3912263. The next prime is 3912319. The reversal of 3912291 is 1922193.

It is an interprime number because it is at equal distance from previous prime (3912263) and next prime (3912319).

It is not a de Polignac number, because 3912291 - 2⁹ = 3911779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3912211) 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 5 ways as a sum of consecutive naturals, for example, 217341 + ... + 217358.

It is an arithmetic number, because the mean of its divisors is an integer number (941850).

Almost surely, 2^3912291 is an apocalyptic number.

3912291 is a deficient number, since it is larger than the sum of its proper divisors (1738809).

3912291 is a wasteful number, since it uses less digits than its factorization.

3912291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434705 (or 434702 counting only the distinct ones).

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

The square root of 3912291 is about 1977.9512127451. The cubic root of 3912291 is about 157.5712753742.

The spelling of 3912291 in words is "three million, nine hundred twelve thousand, two hundred ninety-one".