144744489 has 40 divisors (see below), whose sum is σ = 229396640. Its totient is φ = 90699264.

The previous prime is 144744463. The next prime is 144744517. The reversal of 144744489 is 984447441.

It is not a de Polignac number, because 144744489 - 2⁷ = 144744361 is a prime.

It is a super-2 number, since 2×144744489² = 41901934191742242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144744289) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 250569 + ... + 251145.

It is an arithmetic number, because the mean of its divisors is an integer number (5734916).

Almost surely, 2^144744489 is an apocalyptic number.

144744489 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

144744489 is a deficient number, since it is larger than the sum of its proper divisors (84652151).

144744489 is a wasteful number, since it uses less digits than its factorization.

144744489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771 (or 762 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The square root of 144744489 is about 12030.9803839920. The cubic root of 144744489 is about 525.0500197240.

The spelling of 144744489 in words is "one hundred forty-four million, seven hundred forty-four thousand, four hundred eighty-nine".