89712143 has 4 divisors (see below), whose sum is σ = 91620960. Its totient is φ = 87803328.

The previous prime is 89712131. The next prime is 89712157. The reversal of 89712143 is 34121798.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 89712143 - 2⁶ = 89712079 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 (89712113) 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, 954338 + ... + 954431.

It is an arithmetic number, because the mean of its divisors is an integer number (22905240).

Almost surely, 2^89712143 is an apocalyptic number.

89712143 is a deficient number, since it is larger than the sum of its proper divisors (1908817).

89712143 is a wasteful number, since it uses less digits than its factorization.

89712143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1908816.

The product of its digits is 12096, while the sum is 35.

The square root of 89712143 is about 9471.6494339687. The cubic root of 89712143 is about 447.6621852128.

The spelling of 89712143 in words is "eighty-nine million, seven hundred twelve thousand, one hundred forty-three".