149739445 has 8 divisors (see below), whose sum is σ = 182633400. Its totient is φ = 117827520.

The previous prime is 149739431. The next prime is 149739449. The reversal of 149739445 is 544937941.

It can be written as a sum of positive squares in 4 ways, for example, as 1825201 + 147914244 = 1351^2 + 12162^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 149739445 - 2⁹ = 149738933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 149739395 and 149739404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149739449) 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 in 7 ways as a sum of consecutive naturals, for example, 245170 + ... + 245779.

It is an arithmetic number, because the mean of its divisors is an integer number (22829175).

Almost surely, 2^149739445 is an apocalyptic number.

It is an amenable number.

149739445 is a deficient number, since it is larger than the sum of its proper divisors (32893955).

149739445 is an equidigital number, since it uses as much as digits as its factorization.

149739445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491015.

The product of its digits is 544320, while the sum is 46.

The square root of 149739445 is about 12236.8069773123. The cubic root of 149739445 is about 531.0214607296.

The spelling of 149739445 in words is "one hundred forty-nine million, seven hundred thirty-nine thousand, four hundred forty-five".