349270891 has 2 divisors, whose sum is σ = 349270892. Its totient is φ = 349270890.

The previous prime is 349270879. The next prime is 349270903. The reversal of 349270891 is 198072943.

It is a balanced prime because it is at equal distance from previous prime (349270879) and next prime (349270903).

It is a cyclic number.

It is not a de Polignac number, because 349270891 - 2¹³ = 349262699 is a prime.

It is not a weakly prime, because it can be changed into another prime (349270871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174635445 + 174635446.

It is an arithmetic number, because the mean of its divisors is an integer number (174635446).

Almost surely, 2^349270891 is an apocalyptic number.

349270891 is a deficient number, since it is larger than the sum of its proper divisors (1).

349270891 is an equidigital number, since it uses as much as digits as its factorization.

349270891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 349270891 is about 18688.7905173128. The cubic root of 349270891 is about 704.2401759672.

The spelling of 349270891 in words is "three hundred forty-nine million, two hundred seventy thousand, eight hundred ninety-one".