149248489 has 4 divisors (see below), whose sum is σ = 160729156. Its totient is φ = 137767824.

The previous prime is 149248481. The next prime is 149248499. The reversal of 149248489 is 984842941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 984842941 = 19 ⋅51833839.

It can be written as a sum of positive squares in 2 ways, for example, as 68608089 + 80640400 = 8283^2 + 8980^2 .

It is a cyclic number.

It is not a de Polignac number, because 149248489 - 2³ = 149248481 is a prime.

It is a super-2 number, since 2×149248489² = 44550222937566242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149248481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5740314 + ... + 5740339.

It is an arithmetic number, because the mean of its divisors is an integer number (40182289).

Almost surely, 2^149248489 is an apocalyptic number.

It is an amenable number.

149248489 is a deficient number, since it is larger than the sum of its proper divisors (11480667).

149248489 is a wasteful number, since it uses less digits than its factorization.

149248489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11480666.

The product of its digits is 663552, while the sum is 49.

The square root of 149248489 is about 12216.7298816009. The cubic root of 149248489 is about 530.4404656919.

The spelling of 149248489 in words is "one hundred forty-nine million, two hundred forty-eight thousand, four hundred eighty-nine".