1217169089 has 8 divisors (see below), whose sum is σ = 1322561280. Its totient is φ = 1115910000.

The previous prime is 1217169067. The next prime is 1217169139. The reversal of 1217169089 is 9809617121.

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 1217169089 - 2¹⁶ = 1217103553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1217169059) 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, 1032662 + ... + 1033839.

It is an arithmetic number, because the mean of its divisors is an integer number (165320160).

Almost surely, 2^1217169089 is an apocalyptic number.

1217169089 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1217169089 is a deficient number, since it is larger than the sum of its proper divisors (105392191).

1217169089 is a wasteful number, since it uses less digits than its factorization.

1217169089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2066551.

The product of its (nonzero) digits is 54432, while the sum is 44.

The square root of 1217169089 is about 34887.9504843721. The cubic root of 1217169089 is about 1067.7026112211.

The spelling of 1217169089 in words is "one billion, two hundred seventeen million, one hundred sixty-nine thousand, eighty-nine".