144391904 has 24 divisors (see below), whose sum is σ = 284666760. Its totient is φ = 72095616.

The previous prime is 144391903. The next prime is 144391927. The reversal of 144391904 is 409193441.

144391904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144391903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23807 + ... + 29249.

It is an arithmetic number, because the mean of its divisors is an integer number (11861115).

Almost surely, 2^144391904 is an apocalyptic number.

It is an amenable number.

144391904 is a deficient number, since it is larger than the sum of its proper divisors (140274856).

144391904 is an equidigital number, since it uses as much as digits as its factorization.

144391904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6282 (or 6274 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 144391904 is about 12016.3182381293. The cubic root of 144391904 is about 524.6233476801.

The spelling of 144391904 in words is "one hundred forty-four million, three hundred ninety-one thousand, nine hundred four".