117789445 has 8 divisors (see below), whose sum is σ = 146221560. Its totient is φ = 90982080.

The previous prime is 117789439. The next prime is 117789457. The reversal of 117789445 is 544987711.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1127844 + 116661601 = 1062^2 + 10801^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 117789445 - 2⁷ = 117789317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 117789395 and 117789404.

It is a congruent number.

It is an unprimeable number.

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, 406026 + ... + 406315.

It is an arithmetic number, because the mean of its divisors is an integer number (18277695).

Almost surely, 2^117789445 is an apocalyptic number.

It is an amenable number.

117789445 is a deficient number, since it is larger than the sum of its proper divisors (28432115).

117789445 is an equidigital number, since it uses as much as digits as its factorization.

117789445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812375.

The product of its digits is 282240, while the sum is 46.

The square root of 117789445 is about 10853.0845845778. The cubic root of 117789445 is about 490.1949037221.

The spelling of 117789445 in words is "one hundred seventeen million, seven hundred eighty-nine thousand, four hundred forty-five".