4912091 has 2 divisors, whose sum is σ = 4912092. Its totient is φ = 4912090.

The previous prime is 4912079. The next prime is 4912151. The reversal of 4912091 is 1902194.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4912091 - 2⁶ = 4912027 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4912091.

It is not a weakly prime, because it can be changed into another prime (4912591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2456045 + 2456046.

It is an arithmetic number, because the mean of its divisors is an integer number (2456046).

Almost surely, 2^4912091 is an apocalyptic number.

4912091 is a deficient number, since it is larger than the sum of its proper divisors (1).

4912091 is an equidigital number, since it uses as much as digits as its factorization.

4912091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 4912091 is about 2216.3237579379. The cubic root of 4912091 is about 169.9895149243.

The spelling of 4912091 in words is "four million, nine hundred twelve thousand, ninety-one".