89876543 has 4 divisors (see below), whose sum is σ = 90055728. Its totient is φ = 89697360.

The previous prime is 89876519. The next prime is 89876599. The reversal of 89876543 is 34567898.

89876543 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34567898 = 2 ⋅17283949.

It is a cyclic number.

It is not a de Polignac number, because 89876543 - 2¹⁰ = 89875519 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 89876491 and 89876500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89876513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88838 + ... + 89843.

It is an arithmetic number, because the mean of its divisors is an integer number (22513932).

Almost surely, 2^89876543 is an apocalyptic number.

89876543 is a deficient number, since it is larger than the sum of its proper divisors (179185).

89876543 is a wasteful number, since it uses less digits than its factorization.

89876543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179184.

The product of its digits is 1451520, while the sum is 50.

The square root of 89876543 is about 9480.3239923538. The cubic root of 89876543 is about 447.9354694867.

The spelling of 89876543 in words is "eighty-nine million, eight hundred seventy-six thousand, five hundred forty-three".