116400191 has 4 divisors (see below), whose sum is σ = 116829984. Its totient is φ = 115970400.

The previous prime is 116400161. The next prime is 116400227. The reversal of 116400191 is 191004611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 191004611 = 7 ⋅27286373.

It is a cyclic number.

It is not a de Polignac number, because 116400191 - 2¹⁴ = 116383807 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 (116400121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214490 + ... + 215031.

It is an arithmetic number, because the mean of its divisors is an integer number (29207496).

Almost surely, 2^116400191 is an apocalyptic number.

116400191 is a deficient number, since it is larger than the sum of its proper divisors (429793).

116400191 is an equidigital number, since it uses as much as digits as its factorization.

116400191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429792.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 116400191 is about 10788.8920191093. The cubic root of 116400191 is about 488.2600946541.

The spelling of 116400191 in words is "one hundred sixteen million, four hundred thousand, one hundred ninety-one".