117387777 has 16 divisors (see below), whose sum is σ = 168781760. Its totient is φ = 72142272.

The previous prime is 117387773. The next prime is 117387799. The reversal of 117387777 is 777783711.

It is a happy number.

It is not a de Polignac number, because 117387777 - 2² = 117387773 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117387773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37374 + ... + 40392.

It is an arithmetic number, because the mean of its divisors is an integer number (10548860).

Almost surely, 2^117387777 is an apocalyptic number.

It is an amenable number.

117387777 is a deficient number, since it is larger than the sum of its proper divisors (51393983).

117387777 is a wasteful number, since it uses less digits than its factorization.

117387777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4032.

The product of its digits is 403368, while the sum is 48.

The square root of 117387777 is about 10834.5639967652. The cubic root of 117387777 is about 489.6370726432.

The spelling of 117387777 in words is "one hundred seventeen million, three hundred eighty-seven thousand, seven hundred seventy-seven".