116438221 has 4 divisors (see below), whose sum is σ = 116805852. Its totient is φ = 116070592.

The previous prime is 116438209. The next prime is 116438239. The reversal of 116438221 is 122834611.

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 25140196 + 91298025 = 5014^2 + 9555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116438221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 116438221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116438521) 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, 183340 + ... + 183973.

It is an arithmetic number, because the mean of its divisors is an integer number (29201463).

Almost surely, 2^116438221 is an apocalyptic number.

It is an amenable number.

116438221 is a deficient number, since it is larger than the sum of its proper divisors (367631).

116438221 is an equidigital number, since it uses as much as digits as its factorization.

116438221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367630.

The product of its digits is 2304, while the sum is 28.

The square root of 116438221 is about 10790.6543360447. The cubic root of 116438221 is about 488.3132632655.

The spelling of 116438221 in words is "one hundred sixteen million, four hundred thirty-eight thousand, two hundred twenty-one".