144064509 has 4 divisors (see below), whose sum is σ = 192086016. Its totient is φ = 96043004.

The previous prime is 144064469. The next prime is 144064549. The reversal of 144064509 is 905460441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (144064469) and next prime (144064549).

It is a cyclic number.

It is not a de Polignac number, because 144064509 - 2¹⁶ = 143998973 is a prime.

It is a super-2 number, since 2×144064509² = 41509165506822162, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 144064509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144064549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24010749 + ... + 24010754.

It is an arithmetic number, because the mean of its divisors is an integer number (48021504).

Almost surely, 2^144064509 is an apocalyptic number.

It is an amenable number.

144064509 is a deficient number, since it is larger than the sum of its proper divisors (48021507).

144064509 is an equidigital number, since it uses as much as digits as its factorization.

144064509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48021506.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 144064509 is about 12002.6875740394. The cubic root of 144064509 is about 524.2265363268.

It can be divided in two parts, 14406 and 4509, that added together give a triangular number (18915 = T₁₉₄).

The spelling of 144064509 in words is "one hundred forty-four million, sixty-four thousand, five hundred nine".