349112921 has 2 divisors, whose sum is σ = 349112922. Its totient is φ = 349112920.

The previous prime is 349112903. The next prime is 349112941. The reversal of 349112921 is 129211943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 331640521 + 17472400 = 18211^2 + 4180^2 .

It is a cyclic number.

It is not a de Polignac number, because 349112921 - 2²⁶ = 282004057 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (349112941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174556460 + 174556461.

It is an arithmetic number, because the mean of its divisors is an integer number (174556461).

Almost surely, 2^349112921 is an apocalyptic number.

It is an amenable number.

349112921 is a deficient number, since it is larger than the sum of its proper divisors (1).

349112921 is an equidigital number, since it uses as much as digits as its factorization.

349112921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 32.

The square root of 349112921 is about 18684.5637091156. The cubic root of 349112921 is about 704.1339875237.

The spelling of 349112921 in words is "three hundred forty-nine million, one hundred twelve thousand, nine hundred twenty-one".