9081091 has 2 divisors, whose sum is σ = 9081092. Its totient is φ = 9081090.

The previous prime is 9081071. The next prime is 9081101. The reversal of 9081091 is 1901809.

9081091 = T₂₄₅₉ + T₂₄₆₀ + T₂₄₆₁.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9081091 - 2⁷ = 9080963 is a prime.

It is not a weakly prime, because it can be changed into another prime (9081001) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4540545 + 4540546.

It is an arithmetic number, because the mean of its divisors is an integer number (4540546).

Almost surely, 2^9081091 is an apocalyptic number.

9081091 is the 2461-st centered triangular number.

9081091 is a deficient number, since it is larger than the sum of its proper divisors (1).

9081091 is an equidigital number, since it uses as much as digits as its factorization.

9081091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 9081091 is about 3013.4848597595. The cubic root of 9081091 is about 208.6312415691.

The spelling of 9081091 in words is "nine million, eighty-one thousand, ninety-one".