117249747 has 16 divisors (see below), whose sum is σ = 159489792. Its totient is φ = 76597920.

The previous prime is 117249733. The next prime is 117249749. The reversal of 117249747 is 747942711.

It is not a de Polignac number, because 117249747 - 2⁷ = 117249619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 117249699 and 117249708.

It is not an unprimeable number, because it can be changed into a prime (117249749) 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 15 ways as a sum of consecutive naturals, for example, 55138 + ... + 57224.

It is an arithmetic number, because the mean of its divisors is an integer number (9968112).

Almost surely, 2^117249747 is an apocalyptic number.

117249747 is a deficient number, since it is larger than the sum of its proper divisors (42240045).

117249747 is a wasteful number, since it uses less digits than its factorization.

117249747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2458.

The product of its digits is 98784, while the sum is 42.

The square root of 117249747 is about 10828.1922313930. The cubic root of 117249747 is about 489.4450847040.

The spelling of 117249747 in words is "one hundred seventeen million, two hundred forty-nine thousand, seven hundred forty-seven".