117864451 has 4 divisors (see below), whose sum is σ = 124797672. Its totient is φ = 110931232.

The previous prime is 117864433. The next prime is 117864479. The reversal of 117864451 is 154468711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 154468711 = 317 ⋅487283.

It is a cyclic number.

It is not a de Polignac number, because 117864451 - 2⁹ = 117863939 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 117864451.

It is not an unprimeable number, because it can be changed into a prime (117864401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3466585 + ... + 3466618.

It is an arithmetic number, because the mean of its divisors is an integer number (31199418).

Almost surely, 2^117864451 is an apocalyptic number.

117864451 is a deficient number, since it is larger than the sum of its proper divisors (6933221).

117864451 is an equidigital number, since it uses as much as digits as its factorization.

117864451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6933220.

The product of its digits is 26880, while the sum is 37.

The square root of 117864451 is about 10856.5395499671. The cubic root of 117864451 is about 490.2989304664.

The spelling of 117864451 in words is "one hundred seventeen million, eight hundred sixty-four thousand, four hundred fifty-one".