144507989 has 2 divisors, whose sum is σ = 144507990. Its totient is φ = 144507988.

The previous prime is 144507983. The next prime is 144507991. The reversal of 144507989 is 989705441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79834225 + 64673764 = 8935^2 + 8042^2 .

It is a cyclic number.

It is not a de Polignac number, because 144507989 - 2²⁴ = 127730773 is a prime.

Together with 144507991, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144507983) 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, 72253994 + 72253995.

It is an arithmetic number, because the mean of its divisors is an integer number (72253995).

Almost surely, 2^144507989 is an apocalyptic number.

It is an amenable number.

144507989 is a deficient number, since it is larger than the sum of its proper divisors (1).

144507989 is an equidigital number, since it uses as much as digits as its factorization.

144507989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 144507989 is about 12021.1475741711. The cubic root of 144507989 is about 524.7639017008.

The spelling of 144507989 in words is "one hundred forty-four million, five hundred seven thousand, nine hundred eighty-nine".