1099986149 has 2 divisors, whose sum is σ = 1099986150. Its totient is φ = 1099986148.

The previous prime is 1099986143. The next prime is 1099986187. The reversal of 1099986149 is 9416899901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 997612225 + 102373924 = 31585^2 + 10118^2 .

It is an emirp because it is prime and its reverse (9416899901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1099986149 - 2⁸ = 1099985893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1099986094 and 1099986103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1099986143) 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, 549993074 + 549993075.

It is an arithmetic number, because the mean of its divisors is an integer number (549993075).

Almost surely, 2^1099986149 is an apocalyptic number.

It is an amenable number.

1099986149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1099986149 is an equidigital number, since it uses as much as digits as its factorization.

1099986149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1259712, while the sum is 56.

The square root of 1099986149 is about 33166.0390912150. The cubic root of 1099986149 is about 1032.2757826770.

The spelling of 1099986149 in words is "one billion, ninety-nine million, nine hundred eighty-six thousand, one hundred forty-nine".