143440109 has 8 divisors (see below), whose sum is σ = 146172792. Its totient is φ = 140728320.

The previous prime is 143440091. The next prime is 143440117. The reversal of 143440109 is 901044341.

143440109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 15976009 + 127464100 = 3997^2 + 11290^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143440109 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 (143440909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8999 + ... + 19179.

It is an arithmetic number, because the mean of its divisors is an integer number (18271599).

Almost surely, 2^143440109 is an apocalyptic number.

It is an amenable number.

143440109 is a deficient number, since it is larger than the sum of its proper divisors (2732683).

143440109 is a wasteful number, since it uses less digits than its factorization.

143440109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10447.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 143440109 is about 11976.6484877866. The cubic root of 143440109 is about 523.4680772853.

The spelling of 143440109 in words is "one hundred forty-three million, four hundred forty thousand, one hundred nine".