144444400 has 30 divisors (see below), whose sum is σ = 347028632. Its totient is φ = 57777600.

The previous prime is 144444383. The next prime is 144444431. The reversal of 144444400 is 4444441.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 180156 + ... + 180955.

Almost surely, 2^144444400 is an apocalyptic number.

144444400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144444400 is an abundant number, since it is smaller than the sum of its proper divisors (202584232).

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

144444400 is a wasteful number, since it uses less digits than its factorization.

144444400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361129 (or 361118 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

The square root of 144444400 is about 12018.5024025458. The cubic root of 144444400 is about 524.6869183964.

Adding to 144444400 its reverse (4444441), we get a palindrome (148888841).

The spelling of 144444400 in words is "one hundred forty-four million, four hundred forty-four thousand, four hundred".