144703991 has 2 divisors, whose sum is σ = 144703992. Its totient is φ = 144703990.

The previous prime is 144703967. The next prime is 144704009. The reversal of 144703991 is 199307441.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 144703991 - 2¹⁴ = 144687607 is a prime.

It is a super-2 number, since 2×144703991² = 41878490022656162, 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 (144703961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72351995 + 72351996.

It is an arithmetic number, because the mean of its divisors is an integer number (72351996).

Almost surely, 2^144703991 is an apocalyptic number.

144703991 is a deficient number, since it is larger than the sum of its proper divisors (1).

144703991 is an equidigital number, since it uses as much as digits as its factorization.

144703991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 144703991 is about 12029.2971947658. The cubic root of 144703991 is about 525.0010473146.

The spelling of 144703991 in words is "one hundred forty-four million, seven hundred three thousand, nine hundred ninety-one".