116411821 has 4 divisors (see below), whose sum is σ = 116473500. Its totient is φ = 116350144.

The previous prime is 116411783. The next prime is 116411843. The reversal of 116411821 is 128114611.

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 73770921 + 42640900 = 8589^2 + 6530^2 .

It is a cyclic number.

It is not a de Polignac number, because 116411821 - 2¹⁹ = 115887533 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 (116411861) 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, 27916 + ... + 31813.

It is an arithmetic number, because the mean of its divisors is an integer number (29118375).

Almost surely, 2^116411821 is an apocalyptic number.

It is an amenable number.

116411821 is a deficient number, since it is larger than the sum of its proper divisors (61679).

116411821 is an equidigital number, since it uses as much as digits as its factorization.

116411821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61678.

The product of its digits is 384, while the sum is 25.

The square root of 116411821 is about 10789.4309859232. The cubic root of 116411821 is about 488.2763554401.

The spelling of 116411821 in words is "one hundred sixteen million, four hundred eleven thousand, eight hundred twenty-one".