11902087 has 2 divisors, whose sum is σ = 11902088. Its totient is φ = 11902086.

The previous prime is 11902073. The next prime is 11902127. The reversal of 11902087 is 78020911.

It is a weak prime.

It is an emirp because it is prime and its reverse (78020911) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11902087 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11902027) 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 as a sum of consecutive naturals, namely, 5951043 + 5951044.

It is an arithmetic number, because the mean of its divisors is an integer number (5951044).

Almost surely, 2^11902087 is an apocalyptic number.

11902087 is a deficient number, since it is larger than the sum of its proper divisors (1).

11902087 is an equidigital number, since it uses as much as digits as its factorization.

11902087 is an odious number, because the sum of its binary digits is odd.

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

The square root of 11902087 is about 3449.9401444083. The cubic root of 11902087 is about 228.3184671918.

Adding to 11902087 its reverse (78020911), we get a palindrome (89922998).

The spelling of 11902087 in words is "eleven million, nine hundred two thousand, eighty-seven".