20417089 has 8 divisors (see below), whose sum is σ = 25455168. Its totient is φ = 15909360.

The previous prime is 20417083. The next prime is 20417101. The reversal of 20417089 is 98071402.

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 20417089 - 2⁷ = 20416961 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20417089.

It is not an unprimeable number, because it can be changed into a prime (20417083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132502 + ... + 132655.

It is an arithmetic number, because the mean of its divisors is an integer number (3181896).

Almost surely, 2^20417089 is an apocalyptic number.

It is an amenable number.

20417089 is a deficient number, since it is larger than the sum of its proper divisors (5038079).

20417089 is a wasteful number, since it uses less digits than its factorization.

20417089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265175.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 20417089 is about 4518.5273043327. The cubic root of 20417089 is about 273.3157175176.

The spelling of 20417089 in words is "twenty million, four hundred seventeen thousand, eighty-nine".