144431404 has 12 divisors (see below), whose sum is σ = 272197744. Its totient is φ = 66660624.

The previous prime is 144431389. The next prime is 144431411. The reversal of 144431404 is 404134441.

It is a happy number.

144431404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×144431404² = 41720860922822432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1388712 + ... + 1388815.

Almost surely, 2^144431404 is an apocalyptic number.

It is an amenable number.

144431404 is a deficient number, since it is larger than the sum of its proper divisors (127766340).

144431404 is a wasteful number, since it uses less digits than its factorization.

144431404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2777544 (or 2777542 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 144431404 is about 12017.9617240196. The cubic root of 144431404 is about 524.6711821553.

Adding to 144431404 its reverse (404134441), we get a palindrome (548565845).

The spelling of 144431404 in words is "one hundred forty-four million, four hundred thirty-one thousand, four hundred four".