143439445 has 4 divisors (see below), whose sum is σ = 172127340. Its totient is φ = 114751552.

The previous prime is 143439437. The next prime is 143439463. The reversal of 143439445 is 544934341.

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 26604964 + 116834481 = 5158^2 + 10809^2 .

It is a cyclic number.

It is not a de Polignac number, because 143439445 - 2³ = 143439437 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14343940 + ... + 14343949.

It is an arithmetic number, because the mean of its divisors is an integer number (43031835).

Almost surely, 2^143439445 is an apocalyptic number.

It is an amenable number.

143439445 is a deficient number, since it is larger than the sum of its proper divisors (28687895).

143439445 is an equidigital number, since it uses as much as digits as its factorization.

143439445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28687894.

The product of its digits is 103680, while the sum is 37.

The square root of 143439445 is about 11976.6207671446. The cubic root of 143439445 is about 523.4672695536.

The spelling of 143439445 in words is "one hundred forty-three million, four hundred thirty-nine thousand, four hundred forty-five".