143393864 has 24 divisors (see below), whose sum is σ = 278467410. Its totient is φ = 69221376.

The previous prime is 143393843. The next prime is 143393881. The reversal of 143393864 is 468393341.

It can be written as a sum of positive squares in 3 ways, for example, as 111471364 + 31922500 = 10558^2 + 5650^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3929 + ... + 17384.

Almost surely, 2^143393864 is an apocalyptic number.

It is an amenable number.

143393864 is a deficient number, since it is larger than the sum of its proper divisors (135073546).

143393864 is a wasteful number, since it uses less digits than its factorization.

143393864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21377 (or 21344 counting only the distinct ones).

The product of its digits is 186624, while the sum is 41.

The square root of 143393864 is about 11974.7177002216. The cubic root of 143393864 is about 523.4118159801.

The spelling of 143393864 in words is "one hundred forty-three million, three hundred ninety-three thousand, eight hundred sixty-four".