117651447 has 10 divisors (see below), whose sum is σ = 175751048. Its totient is φ = 78434244.

The previous prime is 117651431. The next prime is 117651511. The reversal of 117651447 is 744156711.

It is not a de Polignac number, because 117651447 - 2⁴ = 117651431 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 (117651847) 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 9 ways as a sum of consecutive naturals, for example, 726163 + ... + 726324.

Almost surely, 2^117651447 is an apocalyptic number.

117651447 is a deficient number, since it is larger than the sum of its proper divisors (58099601).

117651447 is an equidigital number, since it uses as much as digits as its factorization.

117651447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452499 (or 1452490 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The square root of 117651447 is about 10846.7251739868. The cubic root of 117651447 is about 490.0033971721.

The spelling of 117651447 in words is "one hundred seventeen million, six hundred fifty-one thousand, four hundred forty-seven".