144838961 has 2 divisors, whose sum is σ = 144838962. Its totient is φ = 144838960.

The previous prime is 144838951. The next prime is 144838987. The reversal of 144838961 is 169838441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128958736 + 15880225 = 11356^2 + 3985^2 .

It is a cyclic number.

It is not a de Polignac number, because 144838961 - 2¹⁰ = 144837937 is a prime.

It is not a weakly prime, because it can be changed into another prime (144838951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72419480 + 72419481.

It is an arithmetic number, because the mean of its divisors is an integer number (72419481).

Almost surely, 2^144838961 is an apocalyptic number.

It is an amenable number.

144838961 is a deficient number, since it is larger than the sum of its proper divisors (1).

144838961 is an equidigital number, since it uses as much as digits as its factorization.

144838961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 44.

The square root of 144838961 is about 12034.9059406378. The cubic root of 144838961 is about 525.1642249652.

The spelling of 144838961 in words is "one hundred forty-four million, eight hundred thirty-eight thousand, nine hundred sixty-one".