191401 has 8 divisors (see below), whose sum is σ = 224960. Its totient is φ = 159408.

The previous prime is 191353. The next prime is 191413. The reversal of 191401 is 104191.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 191401 - 2⁹ = 190889 is a prime.

191401 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (191441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111 + ... + 628.

It is an arithmetic number, because the mean of its divisors is an integer number (28120).

2¹⁹¹⁴⁰¹ is an apocalyptic number.

It is an amenable number.

191401 is a deficient number, since it is larger than the sum of its proper divisors (33559).

191401 is an equidigital number, since it uses as much as digits as its factorization.

191401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 191401 is about 437.4939999589. The cubic root of 191401 is about 57.6299267389.

Adding to 191401 its reverse (104191), we get a palindrome (295592).

The spelling of 191401 in words is "one hundred ninety-one thousand, four hundred one".