209054089 has 8 divisors (see below), whose sum is σ = 214276832. Its totient is φ = 203847840.

The previous prime is 209054071. The next prime is 209054099. The reversal of 209054089 is 980450902.

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 209054089 - 2⁷ = 209053961 is a prime.

It is a super-2 number, since 2×209054089² = 87407224255239842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (209054059) 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, 23869 + ... + 31429.

It is an arithmetic number, because the mean of its divisors is an integer number (26784604).

Almost surely, 2^209054089 is an apocalyptic number.

It is an amenable number.

209054089 is a deficient number, since it is larger than the sum of its proper divisors (5222743).

209054089 is an equidigital number, since it uses as much as digits as its factorization.

209054089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8247.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 209054089 is about 14458.7028809641. The cubic root of 209054089 is about 593.4984041480.

The spelling of 209054089 in words is "two hundred nine million, fifty-four thousand, eighty-nine".