144969539 has 8 divisors (see below), whose sum is σ = 170314032. Its totient is φ = 121652640.

The previous prime is 144969511. The next prime is 144969541. The reversal of 144969539 is 935969441.

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

It is a cyclic number.

It is not a de Polignac number, because 144969539 - 2¹⁶ = 144904003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144969509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 506744 + ... + 507029.

It is an arithmetic number, because the mean of its divisors is an integer number (21289254).

Almost surely, 2^144969539 is an apocalyptic number.

144969539 is a deficient number, since it is larger than the sum of its proper divisors (25344493).

144969539 is a wasteful number, since it uses less digits than its factorization.

144969539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013797.

The product of its digits is 1049760, while the sum is 50.

The square root of 144969539 is about 12040.3296881771. The cubic root of 144969539 is about 525.3219962728.

The spelling of 144969539 in words is "one hundred forty-four million, nine hundred sixty-nine thousand, five hundred thirty-nine".