144619639 has 2 divisors, whose sum is σ = 144619640. Its totient is φ = 144619638.

The previous prime is 144619633. The next prime is 144619721. The reversal of 144619639 is 936916441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144619639 - 2¹³ = 144611447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 144619595 and 144619604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144619633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72309819 + 72309820.

It is an arithmetic number, because the mean of its divisors is an integer number (72309820).

Almost surely, 2^144619639 is an apocalyptic number.

144619639 is a deficient number, since it is larger than the sum of its proper divisors (1).

144619639 is an equidigital number, since it uses as much as digits as its factorization.

144619639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 43.

The square root of 144619639 is about 12025.7905769226. The cubic root of 144619639 is about 524.8990148924.

The spelling of 144619639 in words is "one hundred forty-four million, six hundred nineteen thousand, six hundred thirty-nine".