1089423209 has 8 divisors (see below), whose sum is σ = 1246003968. Its totient is φ = 933079680.

The previous prime is 1089423191. The next prime is 1089423211. The reversal of 1089423209 is 9023249801.

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 1089423209 - 2⁸ = 1089422953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1089423229) 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, 49352 + ... + 67929.

It is an arithmetic number, because the mean of its divisors is an integer number (155750496).

Almost surely, 2^1089423209 is an apocalyptic number.

It is an amenable number.

1089423209 is a deficient number, since it is larger than the sum of its proper divisors (156580759).

1089423209 is a wasteful number, since it uses less digits than its factorization.

1089423209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118615.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 1089423209 is about 33006.4116347112. The cubic root of 1089423209 is about 1028.9609054560.

The spelling of 1089423209 in words is "one billion, eighty-nine million, four hundred twenty-three thousand, two hundred nine".