12091087 has 8 divisors (see below), whose sum is σ = 12908160. Its totient is φ = 11292120.

The previous prime is 12091081. The next prime is 12091103. The reversal of 12091087 is 78019021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12091087 - 2⁷ = 12090959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12091081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3133 + ... + 5830.

It is an arithmetic number, because the mean of its divisors is an integer number (1613520).

Almost surely, 2^12091087 is an apocalyptic number.

12091087 is a deficient number, since it is larger than the sum of its proper divisors (817073).

12091087 is an equidigital number, since it uses as much as digits as its factorization.

12091087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9053.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 12091087 is about 3477.2240364981. The cubic root of 12091087 is about 229.5206589181.

The spelling of 12091087 in words is "twelve million, ninety-one thousand, eighty-seven".