89781121 has 8 divisors (see below), whose sum is σ = 93812544. Its totient is φ = 85760400.

The previous prime is 89781113. The next prime is 89781143. The reversal of 89781121 is 12118798.

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 89781121 - 2³ = 89781113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89781101) 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, 17946 + ... + 22396.

It is an arithmetic number, because the mean of its divisors is an integer number (11726568).

Almost surely, 2^89781121 is an apocalyptic number.

It is an amenable number.

89781121 is a deficient number, since it is larger than the sum of its proper divisors (4031423).

89781121 is a wasteful number, since it uses less digits than its factorization.

89781121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5351.

The product of its digits is 8064, while the sum is 37.

The square root of 89781121 is about 9475.2900219466. The cubic root of 89781121 is about 447.7768888657.

The spelling of 89781121 in words is "eighty-nine million, seven hundred eighty-one thousand, one hundred twenty-one".