117397841 has 4 divisors (see below), whose sum is σ = 128070384. Its totient is φ = 106725300.

The previous prime is 117397823. The next prime is 117397843. The reversal of 117397841 is 148793711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 148793711 = 11 ⋅13526701.

It is not a de Polignac number, because 117397841 - 2²⁶ = 50288977 is a prime.

It is a super-2 number, since 2×117397841² = 27564506142922562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117397843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5336255 + ... + 5336276.

It is an arithmetic number, because the mean of its divisors is an integer number (32017596).

Almost surely, 2^117397841 is an apocalyptic number.

117397841 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

117397841 is a deficient number, since it is larger than the sum of its proper divisors (10672543).

117397841 is a wasteful number, since it uses less digits than its factorization.

117397841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10672542.

The product of its digits is 42336, while the sum is 41.

The square root of 117397841 is about 10835.0284263586. The cubic root of 117397841 is about 489.6510649196.

The spelling of 117397841 in words is "one hundred seventeen million, three hundred ninety-seven thousand, eight hundred forty-one".