144459931 has 16 divisors (see below), whose sum is σ = 190702080. Its totient is φ = 105943680.

The previous prime is 144459929. The next prime is 144459947. The reversal of 144459931 is 139954441.

It is a cyclic number.

It is not a de Polignac number, because 144459931 - 2¹ = 144459929 is a prime.

It is a super-2 number, since 2×144459931² = 41737343329049522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144459971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53871 + ... + 56488.

It is an arithmetic number, because the mean of its divisors is an integer number (11918880).

Almost surely, 2^144459931 is an apocalyptic number.

144459931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

144459931 is a deficient number, since it is larger than the sum of its proper divisors (46242149).

144459931 is a wasteful number, since it uses less digits than its factorization.

144459931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110394.

The product of its digits is 77760, while the sum is 40.

The square root of 144459931 is about 12019.1485139339. The cubic root of 144459931 is about 524.7057229110.

The spelling of 144459931 in words is "one hundred forty-four million, four hundred fifty-nine thousand, nine hundred thirty-one".