143439446 has 4 divisors (see below), whose sum is σ = 215159172. Its totient is φ = 71719722.

The previous prime is 143439437. The next prime is 143439463. The reversal of 143439446 is 644934341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 644934341 = 73 ⋅8834717.

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 as a sum of consecutive naturals, namely, 35859860 + ... + 35859863.

It is an arithmetic number, because the mean of its divisors is an integer number (53789793).

Almost surely, 2^143439446 is an apocalyptic number.

143439446 is a deficient number, since it is larger than the sum of its proper divisors (71719726).

143439446 is an equidigital number, since it uses as much as digits as its factorization.

143439446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71719725.

The product of its digits is 124416, while the sum is 38.

The square root of 143439446 is about 11976.6208088926. The cubic root of 143439446 is about 523.4672707701.

The spelling of 143439446 in words is "one hundred forty-three million, four hundred thirty-nine thousand, four hundred forty-six".