149738489 has 2 divisors, whose sum is σ = 149738490. Its totient is φ = 149738488.

The previous prime is 149738473. The next prime is 149738497. The reversal of 149738489 is 984837941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149695225 + 43264 = 12235^2 + 208^2 .

It is a cyclic number.

It is not a de Polignac number, because 149738489 - 2⁴ = 149738473 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149738489.

It is not a weakly prime, because it can be changed into another prime (149738429) 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, 74869244 + 74869245.

It is an arithmetic number, because the mean of its divisors is an integer number (74869245).

Almost surely, 2^149738489 is an apocalyptic number.

It is an amenable number.

149738489 is a deficient number, since it is larger than the sum of its proper divisors (1).

149738489 is an equidigital number, since it uses as much as digits as its factorization.

149738489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 53.

The square root of 149738489 is about 12236.7679147723. The cubic root of 149738489 is about 531.0203306386.

The spelling of 149738489 in words is "one hundred forty-nine million, seven hundred thirty-eight thousand, four hundred eighty-nine".