144989873 has 8 divisors (see below), whose sum is σ = 169084800. Its totient is φ = 124276740.

The previous prime is 144989849. The next prime is 144989903. The reversal of 144989873 is 378989441.

It is not a de Polignac number, because 144989873 - 2¹⁸ = 144727729 is a prime.

It is a super-2 number, since 2×144989873² = 42044126545112258, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (144983873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211013 + ... + 211698.

It is an arithmetic number, because the mean of its divisors is an integer number (21135600).

Almost surely, 2^144989873 is an apocalyptic number.

It is an amenable number.

144989873 is a deficient number, since it is larger than the sum of its proper divisors (24094927).

144989873 is an frugal number, since it uses more digits than its factorization.

144989873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422732 (or 422718 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 53.

The square root of 144989873 is about 12041.1740706627. The cubic root of 144989873 is about 525.3465563704.

The spelling of 144989873 in words is "one hundred forty-four million, nine hundred eighty-nine thousand, eight hundred seventy-three".