149216489 has 2 divisors, whose sum is σ = 149216490. Its totient is φ = 149216488.

The previous prime is 149216471. The next prime is 149216503. The reversal of 149216489 is 984612941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86806489 + 62410000 = 9317^2 + 7900^2 .

It is a cyclic number.

It is not a de Polignac number, because 149216489 - 2²⁴ = 132439273 is a prime.

It is not a weakly prime, because it can be changed into another prime (149216189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74608244 + 74608245.

It is an arithmetic number, because the mean of its divisors is an integer number (74608245).

Almost surely, 2^149216489 is an apocalyptic number.

It is an amenable number.

149216489 is a deficient number, since it is larger than the sum of its proper divisors (1).

149216489 is an equidigital number, since it uses as much as digits as its factorization.

149216489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 44.

The square root of 149216489 is about 12215.4201319480. The cubic root of 149216489 is about 530.4025528387.

The spelling of 149216489 in words is "one hundred forty-nine million, two hundred sixteen thousand, four hundred eighty-nine".