144540469 has 2 divisors, whose sum is σ = 144540470. Its totient is φ = 144540468.

The previous prime is 144540419. The next prime is 144540481. The reversal of 144540469 is 964045441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101808100 + 42732369 = 10090^2 + 6537^2 .

It is a cyclic number.

It is not a de Polignac number, because 144540469 - 2²¹ = 142443317 is a prime.

It is a super-2 number, since 2×144540469² = 41783894357479922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144540419) 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, 72270234 + 72270235.

It is an arithmetic number, because the mean of its divisors is an integer number (72270235).

Almost surely, 2^144540469 is an apocalyptic number.

It is an amenable number.

144540469 is a deficient number, since it is larger than the sum of its proper divisors (1).

144540469 is an equidigital number, since it uses as much as digits as its factorization.

144540469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 144540469 is about 12022.4984508213. The cubic root of 144540469 is about 524.8032145324.

It can be divided in two parts, 1445 and 40469, that added together give a palindrome (41914).

The spelling of 144540469 in words is "one hundred forty-four million, five hundred forty thousand, four hundred sixty-nine".