144987369 has 8 divisors (see below), whose sum is σ = 193425792. Its totient is φ = 96603600.

The previous prime is 144987361. The next prime is 144987371. The reversal of 144987369 is 963789441.

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

It is not a de Polignac number, because 144987369 - 2³ = 144987361 is a prime.

It is a super-2 number, since 2×144987369² = 42042674339084322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (144987361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7009 + ... + 18414.

It is an arithmetic number, because the mean of its divisors is an integer number (24178224).

Almost surely, 2^144987369 is an apocalyptic number.

It is an amenable number.

144987369 is a deficient number, since it is larger than the sum of its proper divisors (48438423).

144987369 is a wasteful number, since it uses less digits than its factorization.

144987369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27327.

The product of its digits is 1306368, while the sum is 51.

The square root of 144987369 is about 12041.0700936420. The cubic root of 144987369 is about 525.3435320779.

The spelling of 144987369 in words is "one hundred forty-four million, nine hundred eighty-seven thousand, three hundred sixty-nine".