117961849 has 4 divisors (see below), whose sum is σ = 118117620. Its totient is φ = 117806080.

The previous prime is 117961847. The next prime is 117961853. The reversal of 117961849 is 948169711.

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

It can be written as a sum of positive squares in 2 ways, for example, as 31843449 + 86118400 = 5643^2 + 9280^2 .

It is a cyclic number.

It is not a de Polignac number, because 117961849 - 2¹ = 117961847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 117961799 and 117961808.

It is not an unprimeable number, because it can be changed into a prime (117961843) 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, 76744 + ... + 78265.

It is an arithmetic number, because the mean of its divisors is an integer number (29529405).

Almost surely, 2^117961849 is an apocalyptic number.

It is an amenable number.

117961849 is a deficient number, since it is larger than the sum of its proper divisors (155771).

117961849 is an equidigital number, since it uses as much as digits as its factorization.

117961849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155770.

The product of its digits is 108864, while the sum is 46.

The square root of 117961849 is about 10861.0243071268. The cubic root of 117961849 is about 490.4339471088.

The spelling of 117961849 in words is "one hundred seventeen million, nine hundred sixty-one thousand, eight hundred forty-nine".