144445977 has 16 divisors (see below), whose sum is σ = 230455680. Its totient is φ = 88889616.

The previous prime is 144445967. The next prime is 144446009. The reversal of 144445977 is 779544441.

144445977 is a `hidden beast` number, since 14 + 4 + 44 + 597 + 7 = 666.

It is not a de Polignac number, because 144445977 - 2⁶ = 144445913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144445907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205413 + ... + 206114.

It is an arithmetic number, because the mean of its divisors is an integer number (14403480).

Almost surely, 2^144445977 is an apocalyptic number.

It is an amenable number.

144445977 is a deficient number, since it is larger than the sum of its proper divisors (86009703).

144445977 is a wasteful number, since it uses less digits than its factorization.

144445977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411549 (or 411543 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 144445977 is about 12018.5680095426. The cubic root of 144445977 is about 524.6888278468.

The spelling of 144445977 in words is "one hundred forty-four million, four hundred forty-five thousand, nine hundred seventy-seven".