144396903940 has 24 divisors (see below), whose sum is σ = 307387384920. Its totient is φ = 56967545088.

The previous prime is 144396903929. The next prime is 144396903979. The reversal of 144396903940 is 49309693441.

It can be written as a sum of positive squares in 4 ways, for example, as 54913360896 + 89483543044 = 234336^2 + 299138^2 .

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, 49449535 + ... + 49452454.

It is an arithmetic number, because the mean of its divisors is an integer number (12807807705).

Almost surely, 2^144396903940 is an apocalyptic number.

144396903940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144396903940 is an abundant number, since it is smaller than the sum of its proper divisors (162990480980).

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

144396903940 is a wasteful number, since it uses less digits than its factorization.

144396903940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98902071 (or 98902069 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 52.

The spelling of 144396903940 in words is "one hundred forty-four billion, three hundred ninety-six million, nine hundred three thousand, nine hundred forty".