144455444 has 24 divisors (see below), whose sum is σ = 289450560. Its totient is φ = 61793856.

The previous prime is 144455419. The next prime is 144455449. The reversal of 144455444 is 444554441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144455449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11399 + ... + 20465.

It is an arithmetic number, because the mean of its divisors is an integer number (12060440).

Almost surely, 2^144455444 is an apocalyptic number.

144455444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

144455444 is an abundant number, since it is smaller than the sum of its proper divisors (144995116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

144455444 is a wasteful number, since it uses less digits than its factorization.

144455444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9647 (or 9645 counting only the distinct ones).

The product of its digits is 102400, while the sum is 35.

The square root of 144455444 is about 12018.9618520070. The cubic root of 144455444 is about 524.7002903113.

The spelling of 144455444 in words is "one hundred forty-four million, four hundred fifty-five thousand, four hundred forty-four".