143093889 has 6 divisors (see below), whose sum is σ = 206691186. Its totient is φ = 95395920.

The previous prime is 143093869. The next prime is 143093891. The reversal of 143093889 is 988390341.

It can be written as a sum of positive squares in only one way, i.e., 120626289 + 22467600 = 10983^2 + 4740^2 .

It is not a de Polignac number, because 143093889 - 2⁷ = 143093761 is a prime.

It is a super-2 number, since 2×143093889² = 40951722138288642, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (143093869) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7949652 + ... + 7949669.

It is an arithmetic number, because the mean of its divisors is an integer number (34448531).

Almost surely, 2^143093889 is an apocalyptic number.

It is an amenable number.

143093889 is a deficient number, since it is larger than the sum of its proper divisors (63597297).

143093889 is a wasteful number, since it uses less digits than its factorization.

143093889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15899327 (or 15899324 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 143093889 is about 11962.1857952466. The cubic root of 143093889 is about 523.0465747037.

It can be divided in two parts, 14 and 3093889, that added together give a palindrome (3093903).

The spelling of 143093889 in words is "one hundred forty-three million, ninety-three thousand, eight hundred eighty-nine".