117223929 has 21 divisors (see below), whose sum is σ = 176194879. Its totient is φ = 77954400.

The previous prime is 117223889. The next prime is 117223949. The reversal of 117223929 is 929322711.

The square root of 117223929 is 10827.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 116057529 + 1166400 = 10773^2 + 1080^2 .

It is not a de Polignac number, because 117223929 - 2⁹ = 117223417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 117223893 and 117223902.

It is not an unprimeable number, because it can be changed into a prime (117223949) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 292129 + ... + 292529.

Almost surely, 2^117223929 is an apocalyptic number.

117223929 is the 10827-th square number.

117223929 is the 5414-th centered octagonal number.

It is an amenable number.

117223929 is a deficient number, since it is larger than the sum of its proper divisors (58970950).

117223929 is an frugal number, since it uses more digits than its factorization.

117223929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820 (or 404 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The cubic root of 117223929 is about 489.4091573463.

Multiplying 117223929 by its sum of digits (36), we get a square (4220061444 = 64962²).

It can be divided in two parts, 11722 and 3929, that added together give a palindrome (15651).

The spelling of 117223929 in words is "one hundred seventeen million, two hundred twenty-three thousand, nine hundred twenty-nine".