117012891 has 8 divisors (see below), whose sum is σ = 162800640. Its totient is φ = 74616872.

The previous prime is 117012881. The next prime is 117012913. The reversal of 117012891 is 198210711.

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 117012891 - 2⁶ = 117012827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (117012851) 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, 847851 + ... + 847988.

It is an arithmetic number, because the mean of its divisors is an integer number (20350080).

Almost surely, 2^117012891 is an apocalyptic number.

117012891 is a deficient number, since it is larger than the sum of its proper divisors (45787749).

117012891 is a wasteful number, since it uses less digits than its factorization.

117012891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695865.

The product of its (nonzero) digits is 1008, while the sum is 30.

The square root of 117012891 is about 10817.2496966650. The cubic root of 117012891 is about 489.1152868220.

The spelling of 117012891 in words is "one hundred seventeen million, twelve thousand, eight hundred ninety-one".