144440605 has 16 divisors (see below), whose sum is σ = 175950000. Its totient is φ = 113817600.

The previous prime is 144440591. The next prime is 144440617. The reversal of 144440605 is 506044441.

It can be written as a sum of positive squares in 8 ways, for example, as 25826724 + 118613881 = 5082^2 + 10891^2 .

It is not a de Polignac number, because 144440605 - 2¹¹ = 144438557 is a prime.

It is a super-3 number, since 3×144440605³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115021 + ... + 116269.

It is an arithmetic number, because the mean of its divisors is an integer number (10996875).

Almost surely, 2^144440605 is an apocalyptic number.

It is an amenable number.

144440605 is a deficient number, since it is larger than the sum of its proper divisors (31509395).

144440605 is a wasteful number, since it uses less digits than its factorization.

144440605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 144440605 is about 12018.3445199412. The cubic root of 144440605 is about 524.6823233082.

The spelling of 144440605 in words is "one hundred forty-four million, four hundred forty thousand, six hundred five".