149247089 has 2 divisors, whose sum is σ = 149247090. Its totient is φ = 149247088.

The previous prime is 149247083. The next prime is 149247101. The reversal of 149247089 is 980742941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132066064 + 17181025 = 11492^2 + 4145^2 .

It is an emirp because it is prime and its reverse (980742941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149247089 - 2⁴ = 149247073 is a prime.

It is not a weakly prime, because it can be changed into another prime (149247083) 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, 74623544 + 74623545.

It is an arithmetic number, because the mean of its divisors is an integer number (74623545).

Almost surely, 2^149247089 is an apocalyptic number.

It is an amenable number.

149247089 is a deficient number, since it is larger than the sum of its proper divisors (1).

149247089 is an equidigital number, since it uses as much as digits as its factorization.

149247089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 149247089 is about 12216.6725829908. The cubic root of 149247089 is about 530.4388071180.

The spelling of 149247089 in words is "one hundred forty-nine million, two hundred forty-seven thousand, eighty-nine".