144622439 has 8 divisors (see below), whose sum is σ = 156610272. Its totient is φ = 132757920.

The previous prime is 144622421. The next prime is 144622447. The reversal of 144622439 is 934226441.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144622439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 144622399 and 144622408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144622939) 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, 28379 + ... + 33084.

It is an arithmetic number, because the mean of its divisors is an integer number (19576284).

Almost surely, 2^144622439 is an apocalyptic number.

144622439 is a deficient number, since it is larger than the sum of its proper divisors (11987833).

144622439 is a wasteful number, since it uses less digits than its factorization.

144622439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61657.

The product of its digits is 41472, while the sum is 35.

The square root of 144622439 is about 12025.9069928218. The cubic root of 144622439 is about 524.9024024171.

The spelling of 144622439 in words is "one hundred forty-four million, six hundred twenty-two thousand, four hundred thirty-nine".