144831469 has 2 divisors, whose sum is σ = 144831470. Its totient is φ = 144831468.

The previous prime is 144831419. The next prime is 144831497. The reversal of 144831469 is 964138441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128550244 + 16281225 = 11338^2 + 4035^2 .

It is a cyclic number.

It is not a de Polignac number, because 144831469 - 2⁹ = 144830957 is a prime.

It is a super-2 number, since 2×144831469² = 41952308825395922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144831419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72415734 + 72415735.

It is an arithmetic number, because the mean of its divisors is an integer number (72415735).

Almost surely, 2^144831469 is an apocalyptic number.

It is an amenable number.

144831469 is a deficient number, since it is larger than the sum of its proper divisors (1).

144831469 is an equidigital number, since it uses as much as digits as its factorization.

144831469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 40.

The square root of 144831469 is about 12034.5946753516. The cubic root of 144831469 is about 525.1551698551.

The spelling of 144831469 in words is "one hundred forty-four million, eight hundred thirty-one thousand, four hundred sixty-nine".