349821121 has 8 divisors (see below), whose sum is σ = 398891304. Its totient is φ = 303916800.

The previous prime is 349821083. The next prime is 349821127. The reversal of 349821121 is 121128943.

It can be written as a sum of positive squares in 4 ways, for example, as 318096 + 349503025 = 564^2 + 18695^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 349821121 - 2¹⁷ = 349690049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349821127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 791230 + ... + 791671.

It is an arithmetic number, because the mean of its divisors is an integer number (49861413).

Almost surely, 2^349821121 is an apocalyptic number.

It is an amenable number.

349821121 is a deficient number, since it is larger than the sum of its proper divisors (49070183).

349821121 is a wasteful number, since it uses less digits than its factorization.

349821121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1582931.

The product of its digits is 3456, while the sum is 31.

The square root of 349821121 is about 18703.5055805055. The cubic root of 349821121 is about 704.6097942950.

The spelling of 349821121 in words is "three hundred forty-nine million, eight hundred twenty-one thousand, one hundred twenty-one".