117772509 has 8 divisors (see below), whose sum is σ = 162444960. Its totient is φ = 75807536.

The previous prime is 117772477. The next prime is 117772511. The reversal of 117772509 is 905277711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 117772509 - 2⁵ = 117772477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117772559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 676767 + ... + 676940.

It is an arithmetic number, because the mean of its divisors is an integer number (20305620).

Almost surely, 2^117772509 is an apocalyptic number.

It is an amenable number.

117772509 is a deficient number, since it is larger than the sum of its proper divisors (44672451).

117772509 is a wasteful number, since it uses less digits than its factorization.

117772509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1353739.

The product of its (nonzero) digits is 30870, while the sum is 39.

The square root of 117772509 is about 10852.3043175171. The cubic root of 117772509 is about 490.1714088642.

The spelling of 117772509 in words is "one hundred seventeen million, seven hundred seventy-two thousand, five hundred nine".