149941709 has 2 divisors, whose sum is σ = 149941710. Its totient is φ = 149941708.

The previous prime is 149941697. The next prime is 149941733. The reversal of 149941709 is 907149941.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122168809 + 27772900 = 11053^2 + 5270^2 .

It is an emirp because it is prime and its reverse (907149941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149941709 - 2¹⁶ = 149876173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149941709.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149941789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74970854 + 74970855.

It is an arithmetic number, because the mean of its divisors is an integer number (74970855).

Almost surely, 2^149941709 is an apocalyptic number.

It is an amenable number.

149941709 is a deficient number, since it is larger than the sum of its proper divisors (1).

149941709 is an equidigital number, since it uses as much as digits as its factorization.

149941709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 149941709 is about 12245.0687625672. The cubic root of 149941709 is about 531.2604496399.

The spelling of 149941709 in words is "one hundred forty-nine million, nine hundred forty-one thousand, seven hundred nine".