149988953 has 2 divisors, whose sum is σ = 149988954. Its totient is φ = 149988952.

The previous prime is 149988919. The next prime is 149988967. The reversal of 149988953 is 359889941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145612489 + 4376464 = 12067^2 + 2092^2 .

It is an emirp because it is prime and its reverse (359889941) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149988953 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (149988053) 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, 74994476 + 74994477.

It is an arithmetic number, because the mean of its divisors is an integer number (74994477).

Almost surely, 2^149988953 is an apocalyptic number.

It is an amenable number.

149988953 is a deficient number, since it is larger than the sum of its proper divisors (1).

149988953 is an equidigital number, since it uses as much as digits as its factorization.

149988953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2799360, while the sum is 56.

The square root of 149988953 is about 12246.9977137256. The cubic root of 149988953 is about 531.3162407275.

Adding to 149988953 its sum of digits (56), we get a square (149989009 = 12247²).

The spelling of 149988953 in words is "one hundred forty-nine million, nine hundred eighty-eight thousand, nine hundred fifty-three".