117061391 has 4 divisors (see below), whose sum is σ = 117836784. Its totient is φ = 116286000.

The previous prime is 117061387. The next prime is 117061409. The reversal of 117061391 is 193160711.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 117061391 - 2² = 117061387 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 (117061591) 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 3 ways as a sum of consecutive naturals, for example, 387470 + ... + 387771.

It is an arithmetic number, because the mean of its divisors is an integer number (29459196).

Almost surely, 2^117061391 is an apocalyptic number.

117061391 is a deficient number, since it is larger than the sum of its proper divisors (775393).

117061391 is an equidigital number, since it uses as much as digits as its factorization.

117061391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775392.

The product of its (nonzero) digits is 1134, while the sum is 29.

The square root of 117061391 is about 10819.4912542134. The cubic root of 117061391 is about 489.1828543481.

The spelling of 117061391 in words is "one hundred seventeen million, sixty-one thousand, three hundred ninety-one".