143949863 has 4 divisors (see below), whose sum is σ = 152417520. Its totient is φ = 135482208.

The previous prime is 143949857. The next prime is 143949901. The reversal of 143949863 is 368949341.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 143949863 - 2¹⁴ = 143933479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143949803) 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, 4233803 + ... + 4233836.

It is an arithmetic number, because the mean of its divisors is an integer number (38104380).

Almost surely, 2^143949863 is an apocalyptic number.

143949863 is a deficient number, since it is larger than the sum of its proper divisors (8467657).

143949863 is an equidigital number, since it uses as much as digits as its factorization.

143949863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8467656.

The product of its digits is 559872, while the sum is 47.

The square root of 143949863 is about 11997.9107764644. The cubic root of 143949863 is about 524.0874402474.

The spelling of 143949863 in words is "one hundred forty-three million, nine hundred forty-nine thousand, eight hundred sixty-three".