117248891 has 4 divisors (see below), whose sum is σ = 117282984. Its totient is φ = 117214800.

The previous prime is 117248869. The next prime is 117248897. The reversal of 117248891 is 198842711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 198842711 = 31 ⋅6414281.

It is a cyclic number.

It is not a de Polignac number, because 117248891 - 2¹⁸ = 116986747 is a prime.

It is a super-3 number, since 3×117248891³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117248897) 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, 11225 + ... + 18986.

It is an arithmetic number, because the mean of its divisors is an integer number (29320746).

Almost surely, 2^117248891 is an apocalyptic number.

117248891 is a deficient number, since it is larger than the sum of its proper divisors (34093).

117248891 is an equidigital number, since it uses as much as digits as its factorization.

117248891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34092.

The product of its digits is 32256, while the sum is 41.

The square root of 117248891 is about 10828.1527048708. The cubic root of 117248891 is about 489.4438936112.

The spelling of 117248891 in words is "one hundred seventeen million, two hundred forty-eight thousand, eight hundred ninety-one".