117866369 has 2 divisors, whose sum is σ = 117866370. Its totient is φ = 117866368.

The previous prime is 117866363. The next prime is 117866381. The reversal of 117866369 is 963668711.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117831025 + 35344 = 10855^2 + 188^2 .

It is a cyclic number.

It is not a de Polignac number, because 117866369 - 2²⁰ = 116817793 is a prime.

It is a super-2 number, since 2×117866369² = 27784961882488322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (117866363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58933184 + 58933185.

It is an arithmetic number, because the mean of its divisors is an integer number (58933185).

Almost surely, 2^117866369 is an apocalyptic number.

It is an amenable number.

117866369 is a deficient number, since it is larger than the sum of its proper divisors (1).

117866369 is an equidigital number, since it uses as much as digits as its factorization.

117866369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 47.

The square root of 117866369 is about 10856.6278834636. The cubic root of 117866369 is about 490.3015899854.

The spelling of 117866369 in words is "one hundred seventeen million, eight hundred sixty-six thousand, three hundred sixty-nine".