149772289 has 2 divisors, whose sum is σ = 149772290. Its totient is φ = 149772288.

The previous prime is 149772281. The next prime is 149772317. The reversal of 149772289 is 982277941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98406400 + 51365889 = 9920^2 + 7167^2 .

It is a cyclic number.

It is not a de Polignac number, because 149772289 - 2³ = 149772281 is a prime.

It is not a weakly prime, because it can be changed into another prime (149772281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74886144 + 74886145.

It is an arithmetic number, because the mean of its divisors is an integer number (74886145).

Almost surely, 2^149772289 is an apocalyptic number.

It is an amenable number.

149772289 is a deficient number, since it is larger than the sum of its proper divisors (1).

149772289 is an equidigital number, since it uses as much as digits as its factorization.

149772289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 49.

The square root of 149772289 is about 12238.1489204863. The cubic root of 149772289 is about 531.0602828178.

The spelling of 149772289 in words is "one hundred forty-nine million, seven hundred seventy-two thousand, two hundred eighty-nine".