143999889 has 8 divisors (see below), whose sum is σ = 209454432. Its totient is φ = 87272640.

The previous prime is 143999881. The next prime is 143999903. The reversal of 143999889 is 988999341.

It is a happy number.

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

It is not a de Polignac number, because 143999889 - 2³ = 143999881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (143999881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2181784 + ... + 2181849.

It is an arithmetic number, because the mean of its divisors is an integer number (26181804).

Almost surely, 2^143999889 is an apocalyptic number.

It is an amenable number.

143999889 is a deficient number, since it is larger than the sum of its proper divisors (65454543).

143999889 is a wasteful number, since it uses less digits than its factorization.

143999889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4363647.

The product of its digits is 5038848, while the sum is 60.

The square root of 143999889 is about 11999.9953749991. The cubic root of 143999889 is about 524.1481441648.

The spelling of 143999889 in words is "one hundred forty-three million, nine hundred ninety-nine thousand, eight hundred eighty-nine".