117889445 has 8 divisors (see below), whose sum is σ = 144757536. Its totient is φ = 92118096.

The previous prime is 117889427. The next prime is 117889469. The reversal of 117889445 is 544988711.

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 117889445 - 2¹⁴ = 117873061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 117889445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273947 + ... + 274376.

It is an arithmetic number, because the mean of its divisors is an integer number (18094692).

Almost surely, 2^117889445 is an apocalyptic number.

It is an amenable number.

117889445 is a deficient number, since it is larger than the sum of its proper divisors (26868091).

117889445 is an equidigital number, since it uses as much as digits as its factorization.

117889445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548371.

The product of its digits is 322560, while the sum is 47.

The square root of 117889445 is about 10857.6905923866. The cubic root of 117889445 is about 490.3335851488. Note that the first 3 decimals are identical.

The spelling of 117889445 in words is "one hundred seventeen million, eight hundred eighty-nine thousand, four hundred forty-five".