117889071 has 4 divisors (see below), whose sum is σ = 157185432. Its totient is φ = 78592712.

The previous prime is 117889061. The next prime is 117889073. The reversal of 117889071 is 170988711.

It is a happy number.

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 117889071 - 2¹⁴ = 117872687 is a prime.

It is a super-2 number, since 2×117889071² = 27795666122486082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117889073) 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, 19648176 + ... + 19648181.

It is an arithmetic number, because the mean of its divisors is an integer number (39296358).

Almost surely, 2^117889071 is an apocalyptic number.

117889071 is a deficient number, since it is larger than the sum of its proper divisors (39296361).

117889071 is an equidigital number, since it uses as much as digits as its factorization.

117889071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39296360.

The product of its (nonzero) digits is 28224, while the sum is 42.

The square root of 117889071 is about 10857.6733695576. The cubic root of 117889071 is about 490.3330666264. Note that the first 3 decimals are identical.

The spelling of 117889071 in words is "one hundred seventeen million, eight hundred eighty-nine thousand, seventy-one".