3900120149 has 2 divisors, whose sum is σ = 3900120150. Its totient is φ = 3900120148.

The previous prime is 3900120061. The next prime is 3900120157. The reversal of 3900120149 is 9410210093.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3900002500 + 117649 = 62450^2 + 343^2 .

It is an emirp because it is prime and its reverse (9410210093) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3900120149 - 2¹² = 3900116053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3900120349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1950060074 + 1950060075.

It is an arithmetic number, because the mean of its divisors is an integer number (1950060075).

Almost surely, 2^3900120149 is an apocalyptic number.

It is an amenable number.

3900120149 is a deficient number, since it is larger than the sum of its proper divisors (1).

3900120149 is an equidigital number, since it uses as much as digits as its factorization.

3900120149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 3900120149 is about 62450.9419384528. The cubic root of 3900120149 is about 1574.0770807257.

The spelling of 3900120149 in words is "three billion, nine hundred million, one hundred twenty thousand, one hundred forty-nine".