117628969 has 6 divisors (see below), whose sum is σ = 122966186. Its totient is φ = 112514160.

The previous prime is 117628963. The next prime is 117628999. The reversal of 117628969 is 969826711.

It can be written as a sum of positive squares in only one way, i.e., 104755225 + 12873744 = 10235^2 + 3588^2 .

It is not a de Polignac number, because 117628969 - 2¹¹ = 117626921 is a prime.

It is a super-2 number, since 2×117628969² = 27673148696005922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117628963) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 110652 + ... + 111709.

Almost surely, 2^117628969 is an apocalyptic number.

It is an amenable number.

117628969 is a deficient number, since it is larger than the sum of its proper divisors (5337217).

117628969 is an equidigital number, since it uses as much as digits as its factorization.

117628969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222407 (or 222384 counting only the distinct ones).

The product of its digits is 326592, while the sum is 49.

The square root of 117628969 is about 10845.6889592132. The cubic root of 117628969 is about 489.9721891754.

The spelling of 117628969 in words is "one hundred seventeen million, six hundred twenty-eight thousand, nine hundred sixty-nine".