349290521 has 8 divisors (see below), whose sum is σ = 362342400. Its totient is φ = 336454560.

The previous prime is 349290503. The next prime is 349290527. The reversal of 349290521 is 125092943.

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 349290521 - 2¹⁴ = 349274137 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349290527) 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 in 7 ways as a sum of consecutive naturals, for example, 50681 + ... + 57158.

It is an arithmetic number, because the mean of its divisors is an integer number (45292800).

Almost surely, 2^349290521 is an apocalyptic number.

It is an amenable number.

349290521 is a deficient number, since it is larger than the sum of its proper divisors (13051879).

349290521 is a wasteful number, since it uses less digits than its factorization.

349290521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107959.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 349290521 is about 18689.3156910573. The cubic root of 349290521 is about 704.2533691419.

The spelling of 349290521 in words is "three hundred forty-nine million, two hundred ninety thousand, five hundred twenty-one".