144509090 has 24 divisors (see below), whose sum is σ = 285915420. Its totient is φ = 52548320.

The previous prime is 144509077. The next prime is 144509093. The reversal of 144509090 is 90905441.

It can be written as a sum of positive squares in 2 ways, for example, as 138274081 + 6235009 = 11759^2 + 2497^2 .

It is not an unprimeable number, because it can be changed into a prime (144509093) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58505 + ... + 60924.

Almost surely, 2^144509090 is an apocalyptic number.

144509090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

144509090 is a deficient number, since it is larger than the sum of its proper divisors (141406330).

144509090 is a wasteful number, since it uses less digits than its factorization.

144509090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119458 (or 119447 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 144509090 is about 12021.1933683807. The cubic root of 144509090 is about 524.7652344151.

The spelling of 144509090 in words is "one hundred forty-four million, five hundred nine thousand, ninety".