349990337 has 4 divisors (see below), whose sum is σ = 350029956. Its totient is φ = 349950720.

The previous prime is 349990327. The next prime is 349990349. The reversal of 349990337 is 733099943.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 733099943 = 20773 ⋅35291.

It can be written as a sum of positive squares in 2 ways, for example, as 142659136 + 207331201 = 11944^2 + 14399^2 .

It is a cyclic number.

It is not a de Polignac number, because 349990337 - 2⁴ = 349990321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 349990291 and 349990300.

It is not an unprimeable number, because it can be changed into a prime (349990307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137 + ... + 26457.

It is an arithmetic number, because the mean of its divisors is an integer number (87507489).

Almost surely, 2^349990337 is an apocalyptic number.

It is an amenable number.

349990337 is a deficient number, since it is larger than the sum of its proper divisors (39619).

349990337 is a wasteful number, since it uses less digits than its factorization.

349990337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39618.

The product of its (nonzero) digits is 551124, while the sum is 47.

The square root of 349990337 is about 18708.0286775491. The cubic root of 349990337 is about 704.7233876185.

The spelling of 349990337 in words is "three hundred forty-nine million, nine hundred ninety thousand, three hundred thirty-seven".