143386889 has 4 divisors (see below), whose sum is σ = 146092356. Its totient is φ = 140681424.

The previous prime is 143386849. The next prime is 143386907. The reversal of 143386889 is 988683341.

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

It can be written as a sum of positive squares in 2 ways, for example, as 116812864 + 26574025 = 10808^2 + 5155^2 .

It is a cyclic number.

It is not a de Polignac number, because 143386889 - 2¹² = 143382793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143386849) 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, 1352654 + ... + 1352759.

It is an arithmetic number, because the mean of its divisors is an integer number (36523089).

Almost surely, 2^143386889 is an apocalyptic number.

It is an amenable number.

143386889 is a deficient number, since it is larger than the sum of its proper divisors (2705467).

143386889 is an equidigital number, since it uses as much as digits as its factorization.

143386889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2705466.

The product of its digits is 995328, while the sum is 50.

The square root of 143386889 is about 11974.4264580814. The cubic root of 143386889 is about 523.4033291999.

The spelling of 143386889 in words is "one hundred forty-three million, three hundred eighty-six thousand, eight hundred eighty-nine".