144220394 has 8 divisors (see below), whose sum is σ = 218431200. Its totient is φ = 71409996.

The previous prime is 144220387. The next prime is 144220397. The reversal of 144220394 is 493022441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (144220397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 349844 + ... + 350255.

It is an arithmetic number, because the mean of its divisors is an integer number (27303900).

Almost surely, 2^144220394 is an apocalyptic number.

144220394 is a deficient number, since it is larger than the sum of its proper divisors (74210806).

144220394 is a wasteful number, since it uses less digits than its factorization.

144220394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700204.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 144220394 is about 12009.1795723105. The cubic root of 144220394 is about 524.4155479420.

The spelling of 144220394 in words is "one hundred forty-four million, two hundred twenty thousand, three hundred ninety-four".