349857399 has 32 divisors (see below), whose sum is σ = 510603264. Its totient is φ = 212226560.

The previous prime is 349857397. The next prime is 349857407. The reversal of 349857399 is 993758943.

It is a cyclic number.

It is not a de Polignac number, because 349857399 - 2¹ = 349857397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349857397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 191002 + ... + 192824.

It is an arithmetic number, because the mean of its divisors is an integer number (15956352).

Almost surely, 2^349857399 is an apocalyptic number.

349857399 is a deficient number, since it is larger than the sum of its proper divisors (160745865).

349857399 is a wasteful number, since it uses less digits than its factorization.

349857399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1967.

The product of its digits is 7348320, while the sum is 57.

The square root of 349857399 is about 18704.4753735570. The cubic root of 349857399 is about 704.6341505055.

The spelling of 349857399 in words is "three hundred forty-nine million, eight hundred fifty-seven thousand, three hundred ninety-nine".