143871949 has 4 divisors (see below), whose sum is σ = 154939036. Its totient is φ = 132804864.

The previous prime is 143871943. The next prime is 143871967. The reversal of 143871949 is 949178341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 949178341 = 24733 ⋅38377.

It can be written as a sum of positive squares in 2 ways, for example, as 72131049 + 71740900 = 8493^2 + 8470^2 .

It is a cyclic number.

It is not a de Polignac number, because 143871949 - 2⁷ = 143871821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 143871899 and 143871908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143871943) 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, 5533524 + ... + 5533549.

It is an arithmetic number, because the mean of its divisors is an integer number (38734759).

Almost surely, 2^143871949 is an apocalyptic number.

It is an amenable number.

143871949 is a deficient number, since it is larger than the sum of its proper divisors (11067087).

143871949 is a wasteful number, since it uses less digits than its factorization.

143871949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11067086.

The product of its digits is 217728, while the sum is 46.

The square root of 143871949 is about 11994.6633550092. The cubic root of 143871949 is about 523.9928676942.

The spelling of 143871949 in words is "one hundred forty-three million, eight hundred seventy-one thousand, nine hundred forty-nine".