149999249 has 2 divisors, whose sum is σ = 149999250. Its totient is φ = 149999248.

The previous prime is 149999207. The next prime is 149999257. The reversal of 149999249 is 942999941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119749249 + 30250000 = 10943^2 + 5500^2 .

It is a cyclic number.

It is not a de Polignac number, because 149999249 - 2²⁰ = 148950673 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 149999194 and 149999203.

It is not a weakly prime, because it can be changed into another prime (149995249) 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, 74999624 + 74999625.

It is an arithmetic number, because the mean of its divisors is an integer number (74999625).

Almost surely, 2^149999249 is an apocalyptic number.

It is an amenable number.

149999249 is a deficient number, since it is larger than the sum of its proper divisors (1).

149999249 is an equidigital number, since it uses as much as digits as its factorization.

149999249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1889568, while the sum is 56.

The square root of 149999249 is about 12247.4180544309. The cubic root of 149999249 is about 531.3283978603.

The spelling of 149999249 in words is "one hundred forty-nine million, nine hundred ninety-nine thousand, two hundred forty-nine".