117277789 has 4 divisors (see below), whose sum is σ = 117655200. Its totient is φ = 116900380.

The previous prime is 117277777. The next prime is 117277799. The reversal of 117277789 is 987772711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 117277789 - 2⁷ = 117277661 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 (117277739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188239 + ... + 188860.

It is an arithmetic number, because the mean of its divisors is an integer number (29413800).

Almost surely, 2^117277789 is an apocalyptic number.

It is an amenable number.

117277789 is a deficient number, since it is larger than the sum of its proper divisors (377411).

117277789 is an equidigital number, since it uses as much as digits as its factorization.

117277789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377410.

The product of its digits is 345744, while the sum is 49.

The square root of 117277789 is about 10829.4870146282. The cubic root of 117277789 is about 489.4841009219.

It can be divided in two parts, 1172 and 77789, that added together give a square (78961 = 281²).

The spelling of 117277789 in words is "one hundred seventeen million, two hundred seventy-seven thousand, seven hundred eighty-nine".