144338765 has 4 divisors (see below), whose sum is σ = 173206524. Its totient is φ = 115471008.

The previous prime is 144338729. The next prime is 144338807. The reversal of 144338765 is 567833441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18472804 + 125865961 = 4298^2 + 11219^2 .

It is a cyclic number.

It is not a de Polignac number, because 144338765 - 2¹⁰ = 144337741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14433872 + ... + 14433881.

It is an arithmetic number, because the mean of its divisors is an integer number (43301631).

Almost surely, 2^144338765 is an apocalyptic number.

It is an amenable number.

144338765 is a deficient number, since it is larger than the sum of its proper divisors (28867759).

144338765 is an equidigital number, since it uses as much as digits as its factorization.

144338765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28867758.

The product of its digits is 241920, while the sum is 41.

The square root of 144338765 is about 12014.1069164545. The cubic root of 144338765 is about 524.5589826202.

The spelling of 144338765 in words is "one hundred forty-four million, three hundred thirty-eight thousand, seven hundred sixty-five".