144509903 has 2 divisors, whose sum is σ = 144509904. Its totient is φ = 144509902.

The previous prime is 144509887. The next prime is 144509947. The reversal of 144509903 is 309905441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144509903 - 2⁴ = 144509887 is a prime.

It is a super-2 number, since 2×144509903² = 41766224130138818, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144509983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72254951 + 72254952.

It is an arithmetic number, because the mean of its divisors is an integer number (72254952).

Almost surely, 2^144509903 is an apocalyptic number.

144509903 is a deficient number, since it is larger than the sum of its proper divisors (1).

144509903 is an equidigital number, since it uses as much as digits as its factorization.

144509903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 144509903 is about 12021.2271836115. The cubic root of 144509903 is about 524.7662185132.

The spelling of 144509903 in words is "one hundred forty-four million, five hundred nine thousand, nine hundred three".