89189129 has 4 divisors (see below), whose sum is σ = 91599684. Its totient is φ = 86778576.

The previous prime is 89189117. The next prime is 89189143. The reversal of 89189129 is 92198198.

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

It can be written as a sum of positive squares in 2 ways, for example, as 70896400 + 18292729 = 8420^2 + 4277^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89189129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (89189159) 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, 1205222 + ... + 1205295.

It is an arithmetic number, because the mean of its divisors is an integer number (22899921).

Almost surely, 2^89189129 is an apocalyptic number.

It is an amenable number.

89189129 is a deficient number, since it is larger than the sum of its proper divisors (2410555).

89189129 is a wasteful number, since it uses less digits than its factorization.

89189129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2410554.

The product of its digits is 93312, while the sum is 47.

The square root of 89189129 is about 9443.9996293943. Note that the first 3 decimals coincide. The cubic root of 89189129 is about 446.7905452671.

The spelling of 89189129 in words is "eighty-nine million, one hundred eighty-nine thousand, one hundred twenty-nine".