117707491 has 32 divisors (see below), whose sum is σ = 141419520. Its totient is φ = 96835200.

The previous prime is 117707483. The next prime is 117707501. The reversal of 117707491 is 194707711.

117707491 = 1359² + 1360² + ... + 1419².

It is not a de Polignac number, because 117707491 - 2³ = 117707483 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117707491.

It is not an unprimeable number, because it can be changed into a prime (117707441) 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 31 ways as a sum of consecutive naturals, for example, 447426 + ... + 447688.

It is an arithmetic number, because the mean of its divisors is an integer number (4419360).

Almost surely, 2^117707491 is an apocalyptic number.

117707491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

117707491 is a deficient number, since it is larger than the sum of its proper divisors (23712029).

117707491 is a wasteful number, since it uses less digits than its factorization.

117707491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387.

The product of its (nonzero) digits is 12348, while the sum is 37.

The square root of 117707491 is about 10849.3083189667. The cubic root of 117707491 is about 490.0811902116.

The spelling of 117707491 in words is "one hundred seventeen million, seven hundred seven thousand, four hundred ninety-one".