144494438 has 16 divisors (see below), whose sum is σ = 238790160. Its totient is φ = 65028000.

The previous prime is 144494431. The next prime is 144494461. The reversal of 144494438 is 834494441.

It is a super-2 number, since 2×144494438² = 41757285225871688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 144494395 and 144494404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144494431) 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, 30293 + ... + 34736.

It is an arithmetic number, because the mean of its divisors is an integer number (14924385).

Almost surely, 2^144494438 is an apocalyptic number.

144494438 is a deficient number, since it is larger than the sum of its proper divisors (94295722).

144494438 is a wasteful number, since it uses less digits than its factorization.

144494438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65143.

The product of its digits is 221184, while the sum is 41.

The square root of 144494438 is about 12020.5839292440. The cubic root of 144494438 is about 524.7474982296.

The spelling of 144494438 in words is "one hundred forty-four million, four hundred ninety-four thousand, four hundred thirty-eight".