9990143 has 8 divisors (see below), whose sum is σ = 10546800. Its totient is φ = 9436608.

The previous prime is 9990137. The next prime is 9990163. The reversal of 9990143 is 3410999.

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 9990143 - 2⁸ = 9989887 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 (9990133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9155 + ... + 10187.

It is an arithmetic number, because the mean of its divisors is an integer number (1318350).

Almost surely, 2^9990143 is an apocalyptic number.

9990143 is a deficient number, since it is larger than the sum of its proper divisors (556657).

9990143 is a wasteful number, since it uses less digits than its factorization.

9990143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1561.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 9990143 is about 3160.7187473738. The cubic root of 9990143 is about 215.3726581896.

The spelling of 9990143 in words is "nine million, nine hundred ninety thousand, one hundred forty-three".