144456669 has 16 divisors (see below), whose sum is σ = 244583040. Its totient is φ = 82546560.

The previous prime is 144456647. The next prime is 144456673. The reversal of 144456669 is 966654441.

It is a happy number.

It is not a de Polignac number, because 144456669 - 2⁸ = 144456413 is a prime.

It is a super-2 number, since 2×144456669² = 41735458437151122, which contains 22 as substring.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144456469) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 381972 + ... + 382349.

It is an arithmetic number, because the mean of its divisors is an integer number (15286440).

Almost surely, 2^144456669 is an apocalyptic number.

It is an amenable number.

144456669 is a deficient number, since it is larger than the sum of its proper divisors (100126371).

144456669 is an equidigital number, since it uses as much as digits as its factorization.

144456669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764337 (or 764331 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 144456669 is about 12019.0128130392. The cubic root of 144456669 is about 524.7017734815.

The spelling of 144456669 in words is "one hundred forty-four million, four hundred fifty-six thousand, six hundred sixty-nine".