117471729 has 4 divisors (see below), whose sum is σ = 156628976. Its totient is φ = 78314484.

The previous prime is 117471719. The next prime is 117471763. The reversal of 117471729 is 927174711.

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.

It is not a de Polignac number, because 117471729 - 2⁴ = 117471713 is a prime.

It is a super-2 number, since 2×117471729² = 27599214228498882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117471709) 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, 19578619 + ... + 19578624.

It is an arithmetic number, because the mean of its divisors is an integer number (39157244).

Almost surely, 2^117471729 is an apocalyptic number.

It is an amenable number.

117471729 is a deficient number, since it is larger than the sum of its proper divisors (39157247).

117471729 is an equidigital number, since it uses as much as digits as its factorization.

117471729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39157246.

The product of its digits is 24696, while the sum is 39.

The square root of 117471729 is about 10838.4375719012. The cubic root of 117471729 is about 489.7537691092.

The spelling of 117471729 in words is "one hundred seventeen million, four hundred seventy-one thousand, seven hundred twenty-nine".