117487399 has 4 divisors (see below), whose sum is σ = 118096336. Its totient is φ = 116878464.

The previous prime is 117487373. The next prime is 117487429. The reversal of 117487399 is 993784711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 993784711 = 137 ⋅7253903.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117487399 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 (117487369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304179 + ... + 304564.

It is an arithmetic number, because the mean of its divisors is an integer number (29524084).

Almost surely, 2^117487399 is an apocalyptic number.

117487399 is a deficient number, since it is larger than the sum of its proper divisors (608937).

117487399 is an equidigital number, since it uses as much as digits as its factorization.

117487399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608936.

The product of its digits is 381024, while the sum is 49.

The square root of 117487399 is about 10839.1604379675. The cubic root of 117487399 is about 489.7755448459.

The spelling of 117487399 in words is "one hundred seventeen million, four hundred eighty-seven thousand, three hundred ninety-nine".