144609961 has 2 divisors, whose sum is σ = 144609962. Its totient is φ = 144609960.

The previous prime is 144609937. The next prime is 144610027. The reversal of 144609961 is 169906441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144000000 + 609961 = 12000^2 + 781^2 .

It is a cyclic number.

It is not a de Polignac number, because 144609961 - 2⁹ = 144609449 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (144609161) 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 as a sum of consecutive naturals, namely, 72304980 + 72304981.

It is an arithmetic number, because the mean of its divisors is an integer number (72304981).

Almost surely, 2^144609961 is an apocalyptic number.

It is an amenable number.

144609961 is a deficient number, since it is larger than the sum of its proper divisors (1).

144609961 is an equidigital number, since it uses as much as digits as its factorization.

144609961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 144609961 is about 12025.3881850026. The cubic root of 144609961 is about 524.8873058189.

It can be divided in two parts, 144 and 609961, that multiplied together give a square (87834384 = 9372²).

The spelling of 144609961 in words is "one hundred forty-four million, six hundred nine thousand, nine hundred sixty-one".