144639430 has 16 divisors (see below), whose sum is σ = 280378224. Its totient is φ = 53405280.

The previous prime is 144639421. The next prime is 144639437. The reversal of 144639430 is 34936441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144639437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 556176 + ... + 556435.

It is an arithmetic number, because the mean of its divisors is an integer number (17523639).

Almost surely, 2^144639430 is an apocalyptic number.

144639430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

144639430 is a deficient number, since it is larger than the sum of its proper divisors (135738794).

144639430 is a wasteful number, since it uses less digits than its factorization.

144639430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112631.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 144639430 is about 12026.6134052775. The cubic root of 144639430 is about 524.9229577046.

The spelling of 144639430 in words is "one hundred forty-four million, six hundred thirty-nine thousand, four hundred thirty".