89820145 has 4 divisors (see below), whose sum is σ = 107784180. Its totient is φ = 71856112.

The previous prime is 89820131. The next prime is 89820161. The reversal of 89820145 is 54102898.

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 12503296 + 77316849 = 3536^2 + 8793^2 .

It is a cyclic number.

It is not a de Polignac number, because 89820145 - 2²¹ = 87722993 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8982010 + ... + 8982019.

It is an arithmetic number, because the mean of its divisors is an integer number (26946045).

Almost surely, 2^89820145 is an apocalyptic number.

It is an amenable number.

89820145 is a deficient number, since it is larger than the sum of its proper divisors (17964035).

89820145 is a wasteful number, since it uses less digits than its factorization.

89820145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17964034.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 89820145 is about 9477.3490491804. The cubic root of 89820145 is about 447.8417559335.

The spelling of 89820145 in words is "eighty-nine million, eight hundred twenty thousand, one hundred forty-five".