143916109 has 8 divisors (see below), whose sum is σ = 147583800. Its totient is φ = 140256000.

The previous prime is 143916049. The next prime is 143916119. The reversal of 143916109 is 901619341.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 635209 + 143280900 = 797^2 + 11970^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 143916109 - 2¹³ = 143907917 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 (143916119) 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, 72867 + ... + 74815.

It is an arithmetic number, because the mean of its divisors is an integer number (18447975).

Almost surely, 2^143916109 is an apocalyptic number.

It is an amenable number.

143916109 is a deficient number, since it is larger than the sum of its proper divisors (3667691).

143916109 is a wasteful number, since it uses less digits than its factorization.

143916109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3791.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 143916109 is about 11996.5040324254. The cubic root of 143916109 is about 524.0464735989.

The spelling of 143916109 in words is "one hundred forty-three million, nine hundred sixteen thousand, one hundred nine".