350891 has 2 divisors, whose sum is σ = 350892. Its totient is φ = 350890.

The previous prime is 350887. The next prime is 350899. The reversal of 350891 is 198053.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 350891 - 2² = 350887 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a plaindrome in base 4 and base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 350891.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 350891.

It is not a weakly prime, because it can be changed into another prime (350899) 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, 175445 + 175446.

It is an arithmetic number, because the mean of its divisors is an integer number (175446).

2³⁵⁰⁸⁹¹ is an apocalyptic number.

350891 is a deficient number, since it is larger than the sum of its proper divisors (1).

350891 is an equidigital number, since it uses as much as digits as its factorization.

350891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 350891 is about 592.3605321086. The cubic root of 350891 is about 70.5327380101.

The spelling of 350891 in words is "three hundred fifty thousand, eight hundred ninety-one".