144639433 has 8 divisors (see below), whose sum is σ = 151160256. Its totient is φ = 138138000.

The previous prime is 144639421. The next prime is 144639437. The reversal of 144639433 is 334936441.

It is a happy number.

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

It is not a de Polignac number, because 144639433 - 2¹³ = 144631241 is a prime.

It is a super-2 number, since 2×144639433² = 41841131157122978, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144639392 and 144639401.

It is not an unprimeable number, because it can be changed into a prime (144639437) 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, 11638 + ... + 20608.

It is an arithmetic number, because the mean of its divisors is an integer number (18895032).

Almost surely, 2^144639433 is an apocalyptic number.

It is an amenable number.

144639433 is a deficient number, since it is larger than the sum of its proper divisors (6520823).

144639433 is an equidigital number, since it uses as much as digits as its factorization.

144639433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9695.

The product of its digits is 93312, while the sum is 37.

The square root of 144639433 is about 12026.6135300009. The cubic root of 144639433 is about 524.9229613338.

The spelling of 144639433 in words is "one hundred forty-four million, six hundred thirty-nine thousand, four hundred thirty-three".