117764389 has 12 divisors (see below), whose sum is σ = 129155364. Its totient is φ = 107002112.

The previous prime is 117764371. The next prime is 117764407. The reversal of 117764389 is 983467711.

It is an interprime number because it is at equal distance from previous prime (117764371) and next prime (117764407).

It can be written as a sum of positive squares in 6 ways, for example, as 6630625 + 111133764 = 2575^2 + 10542^2 .

It is not a de Polignac number, because 117764389 - 2¹⁷ = 117633317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117764369) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10179 + ... + 18415.

It is an arithmetic number, because the mean of its divisors is an integer number (10762947).

Almost surely, 2^117764389 is an apocalyptic number.

It is an amenable number.

117764389 is a deficient number, since it is larger than the sum of its proper divisors (11390975).

117764389 is an equidigital number, since it uses as much as digits as its factorization.

117764389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8312 (or 8283 counting only the distinct ones).

The product of its digits is 254016, while the sum is 46.

The square root of 117764389 is about 10851.9301969742. The cubic root of 117764389 is about 490.1601434075.

The spelling of 117764389 in words is "one hundred seventeen million, seven hundred sixty-four thousand, three hundred eighty-nine".