246391 has 2 divisors, whose sum is σ = 246392. Its totient is φ = 246390.

The previous prime is 246371. The next prime is 246403. The reversal of 246391 is 193642.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 246391 - 2¹⁵ = 213623 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (246361) 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 as a sum of consecutive naturals, namely, 123195 + 123196.

It is an arithmetic number, because the mean of its divisors is an integer number (123196).

2²⁴⁶³⁹¹ is an apocalyptic number.

246391 is a deficient number, since it is larger than the sum of its proper divisors (1).

246391 is an equidigital number, since it uses as much as digits as its factorization.

246391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 25.

The square root of 246391 is about 496.3778802485. The cubic root of 246391 is about 62.6914449823.

The spelling of 246391 in words is "two hundred forty-six thousand, three hundred ninety-one".