117439081 has 4 divisors (see below), whose sum is σ = 122545152. Its totient is φ = 112333012.

The previous prime is 117439079. The next prime is 117439097. The reversal of 117439081 is 180934711.

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 117439081 - 2¹ = 117439079 is a prime.

It is a super-2 number, since 2×117439081² = 27583875492249122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117439051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2553001 + ... + 2553046.

It is an arithmetic number, because the mean of its divisors is an integer number (30636288).

Almost surely, 2^117439081 is an apocalyptic number.

It is an amenable number.

117439081 is a deficient number, since it is larger than the sum of its proper divisors (5106071).

117439081 is an equidigital number, since it uses as much as digits as its factorization.

117439081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5106070.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 117439081 is about 10836.9313460961. The cubic root of 117439081 is about 489.7083937589.

The spelling of 117439081 in words is "one hundred seventeen million, four hundred thirty-nine thousand, eighty-one".