144477369 has 12 divisors (see below), whose sum is σ = 210757092. Its totient is φ = 95364000.

The previous prime is 144477367. The next prime is 144477409. The reversal of 144477369 is 963774441.

144477369 is a `hidden beast` number, since 144 + 477 + 36 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 136609344 + 7868025 = 11688^2 + 2805^2 .

It is not a de Polignac number, because 144477369 - 2¹ = 144477367 is a prime.

It is a super-2 number, since 2×144477369² = 41747420306324322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (144477367) 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 in 11 ways as a sum of consecutive naturals, for example, 78562 + ... + 80379.

It is an arithmetic number, because the mean of its divisors is an integer number (17563091).

Almost surely, 2^144477369 is an apocalyptic number.

It is an amenable number.

144477369 is a deficient number, since it is larger than the sum of its proper divisors (66279723).

144477369 is a wasteful number, since it uses less digits than its factorization.

144477369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159048 (or 159045 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 144477369 is about 12019.8739178080. The cubic root of 144477369 is about 524.7268347635.

The spelling of 144477369 in words is "one hundred forty-four million, four hundred seventy-seven thousand, three hundred sixty-nine".