144429940 has 24 divisors (see below), whose sum is σ = 303674112. Its totient is φ = 57701280.

The previous prime is 144429937. The next prime is 144429983. The reversal of 144429940 is 49924441.

It is a self number, because there is not a number n which added to its sum of digits gives 144429940.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14257 + ... + 22183.

It is an arithmetic number, because the mean of its divisors is an integer number (12653088).

Almost surely, 2^144429940 is an apocalyptic number.

144429940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144429940 is an abundant number, since it is smaller than the sum of its proper divisors (159244172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

144429940 is a wasteful number, since it uses less digits than its factorization.

144429940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8847 (or 8845 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 144429940 is about 12017.9008150342. The cubic root of 144429940 is about 524.6694094079.

The spelling of 144429940 in words is "one hundred forty-four million, four hundred twenty-nine thousand, nine hundred forty".