143987963 has 8 divisors (see below), whose sum is σ = 169866240. Its totient is φ = 119436840.

The previous prime is 143987953. The next prime is 143987969. The reversal of 143987963 is 369789341.

143987963 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 143987963 - 2¹² = 143983867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143987969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331553 + ... + 331986.

It is an arithmetic number, because the mean of its divisors is an integer number (21233280).

Almost surely, 2^143987963 is an apocalyptic number.

143987963 is a deficient number, since it is larger than the sum of its proper divisors (25878277).

143987963 is an equidigital number, since it uses as much as digits as its factorization.

143987963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663577.

The product of its digits is 979776, while the sum is 50.

The square root of 143987963 is about 11999.4984478519. The cubic root of 143987963 is about 524.1336738681.

The spelling of 143987963 in words is "one hundred forty-three million, nine hundred eighty-seven thousand, nine hundred sixty-three".