99889543 has 8 divisors (see below), whose sum is σ = 111283200. Its totient is φ = 89025888.

The previous prime is 99889541. The next prime is 99889549. The reversal of 99889543 is 34598899.

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 99889543 - 2¹ = 99889541 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 (99889541) 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, 132103 + ... + 132856.

It is an arithmetic number, because the mean of its divisors is an integer number (13910400).

Almost surely, 2^99889543 is an apocalyptic number.

99889543 is a deficient number, since it is larger than the sum of its proper divisors (11393657).

99889543 is a wasteful number, since it uses less digits than its factorization.

99889543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265001.

The product of its digits is 2799360, while the sum is 55.

The square root of 99889543 is about 9994.4756240635. The cubic root of 99889543 is about 463.9879217402.

The spelling of 99889543 in words is "ninety-nine million, eight hundred eighty-nine thousand, five hundred forty-three".