149042489 has 2 divisors, whose sum is σ = 149042490. Its totient is φ = 149042488.

The previous prime is 149042483. The next prime is 149042521. The reversal of 149042489 is 984240941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149035264 + 7225 = 12208^2 + 85^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149042489 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (149042483) 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, 74521244 + 74521245.

It is an arithmetic number, because the mean of its divisors is an integer number (74521245).

Almost surely, 2^149042489 is an apocalyptic number.

It is an amenable number.

149042489 is a deficient number, since it is larger than the sum of its proper divisors (1).

149042489 is an equidigital number, since it uses as much as digits as its factorization.

149042489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 149042489 is about 12208.2959089301. The cubic root of 149042489 is about 530.1963067754.

The spelling of 149042489 in words is "one hundred forty-nine million, forty-two thousand, four hundred eighty-nine".