15889091 has 2 divisors, whose sum is σ = 15889092. Its totient is φ = 15889090.

The previous prime is 15889079. The next prime is 15889103. The reversal of 15889091 is 19098851.

It is a balanced prime because it is at equal distance from previous prime (15889079) and next prime (15889103).

It is an emirp because it is prime and its reverse (19098851) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15889091 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15889031) 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, 7944545 + 7944546.

It is an arithmetic number, because the mean of its divisors is an integer number (7944546).

Almost surely, 2^15889091 is an apocalyptic number.

15889091 is a deficient number, since it is larger than the sum of its proper divisors (1).

15889091 is an equidigital number, since it uses as much as digits as its factorization.

15889091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 41.

The square root of 15889091 is about 3986.1122663568. The cubic root of 15889091 is about 251.4006236922.

The spelling of 15889091 in words is "fifteen million, eight hundred eighty-nine thousand, ninety-one".