99988143 has 16 divisors (see below), whose sum is σ = 138194400. Its totient is φ = 64229760.

The previous prime is 99988139. The next prime is 99988219. The reversal of 99988143 is 34188999.

It is a happy number.

It is not a de Polignac number, because 99988143 - 2² = 99988139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99988103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60873 + ... + 62493.

It is an arithmetic number, because the mean of its divisors is an integer number (8637150).

Almost surely, 2^99988143 is an apocalyptic number.

99988143 is a deficient number, since it is larger than the sum of its proper divisors (38206257).

99988143 is a wasteful number, since it uses less digits than its factorization.

99988143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2362.

The product of its digits is 559872, while the sum is 51.

The square root of 99988143 is about 9999.4071324254. The cubic root of 99988143 is about 464.1405375299.

The spelling of 99988143 in words is "ninety-nine million, nine hundred eighty-eight thousand, one hundred forty-three".