144329687 has 4 divisors (see below), whose sum is σ = 146306880. Its totient is φ = 142352496.

The previous prime is 144329683. The next prime is 144329701. The reversal of 144329687 is 786923441.

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

It is a cyclic number.

It is not a de Polignac number, because 144329687 - 2² = 144329683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144329683) 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, 988487 + ... + 988632.

It is an arithmetic number, because the mean of its divisors is an integer number (36576720).

Almost surely, 2^144329687 is an apocalyptic number.

144329687 is a deficient number, since it is larger than the sum of its proper divisors (1977193).

144329687 is an equidigital number, since it uses as much as digits as its factorization.

144329687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1977192.

The product of its digits is 290304, while the sum is 44.

The square root of 144329687 is about 12013.7291046536. The cubic root of 144329687 is about 524.5479852366.

The spelling of 144329687 in words is "one hundred forty-four million, three hundred twenty-nine thousand, six hundred eighty-seven".