346388891 has 2 divisors, whose sum is σ = 346388892. Its totient is φ = 346388890.

The previous prime is 346388849. The next prime is 346388899. The reversal of 346388891 is 198883643.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 346388891 - 2⁶ = 346388827 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (346388899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173194445 + 173194446.

It is an arithmetic number, because the mean of its divisors is an integer number (173194446).

Almost surely, 2^346388891 is an apocalyptic number.

346388891 is a deficient number, since it is larger than the sum of its proper divisors (1).

346388891 is an equidigital number, since it uses as much as digits as its factorization.

346388891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 995328, while the sum is 50.

The square root of 346388891 is about 18611.5257569067. The cubic root of 346388891 is about 702.2978169698.

The spelling of 346388891 in words is "three hundred forty-six million, three hundred eighty-eight thousand, eight hundred ninety-one".