144440040 has 32 divisors (see below), whose sum is σ = 433320480. Its totient is φ = 38517312.

The previous prime is 144440029. The next prime is 144440077. The reversal of 144440040 is 40044441.

It is a junction number, because it is equal to n+sod(n) for n = 144439989 and 144440016.

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, 601714 + ... + 601953.

It is an arithmetic number, because the mean of its divisors is an integer number (13541265).

Almost surely, 2^144440040 is an apocalyptic number.

144440040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144440040 is an abundant number, since it is smaller than the sum of its proper divisors (288880440).

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

144440040 is a wasteful number, since it uses less digits than its factorization.

144440040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203681 (or 1203677 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 144440040 is about 12018.3210141850. The cubic root of 144440040 is about 524.6816391841.

Adding to 144440040 its reverse (40044441), we get a palindrome (184484481).

The spelling of 144440040 in words is "one hundred forty-four million, four hundred forty thousand, forty".