117878903 has 4 divisors (see below), whose sum is σ = 117935808. Its totient is φ = 117822000.

The previous prime is 117878899. The next prime is 117878923. The reversal of 117878903 is 309878711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 309878711 = 14747 ⋅21013.

It is a cyclic number.

It is not a de Polignac number, because 117878903 - 2² = 117878899 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 (117878923) 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, 25223 + ... + 29528.

It is an arithmetic number, because the mean of its divisors is an integer number (29483952).

Almost surely, 2^117878903 is an apocalyptic number.

117878903 is a deficient number, since it is larger than the sum of its proper divisors (56905).

117878903 is an equidigital number, since it uses as much as digits as its factorization.

117878903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56904.

The product of its (nonzero) digits is 84672, while the sum is 44.

The square root of 117878903 is about 10857.2051191824. The cubic root of 117878903 is about 490.3189690516.

The spelling of 117878903 in words is "one hundred seventeen million, eight hundred seventy-eight thousand, nine hundred three".