117878699 has 4 divisors (see below), whose sum is σ = 118235160. Its totient is φ = 117522240.

The previous prime is 117878689. The next prime is 117878701. The reversal of 117878699 is 996878711.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117878699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117878639) 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, 177734 + ... + 178395.

It is an arithmetic number, because the mean of its divisors is an integer number (29558790).

Almost surely, 2^117878699 is an apocalyptic number.

117878699 is a deficient number, since it is larger than the sum of its proper divisors (356461).

117878699 is an equidigital number, since it uses as much as digits as its factorization.

117878699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356460.

The product of its digits is 1524096, while the sum is 56.

The square root of 117878699 is about 10857.1957244953. The cubic root of 117878699 is about 490.3186862045.

The spelling of 117878699 in words is "one hundred seventeen million, eight hundred seventy-eight thousand, six hundred ninety-nine".