349840263 has 16 divisors (see below), whose sum is σ = 494336736. Its totient is φ = 219310080.

The previous prime is 349840261. The next prime is 349840289. The reversal of 349840263 is 362048943.

It is not a de Polignac number, because 349840263 - 2¹ = 349840261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349840261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71743 + ... + 76463.

It is an arithmetic number, because the mean of its divisors is an integer number (30896046).

Almost surely, 2^349840263 is an apocalyptic number.

349840263 is a deficient number, since it is larger than the sum of its proper divisors (144496473).

349840263 is a wasteful number, since it uses less digits than its factorization.

349840263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6194.

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 349840263 is about 18704.0172957576. The cubic root of 349840263 is about 704.6226460011.

The spelling of 349840263 in words is "three hundred forty-nine million, eight hundred forty thousand, two hundred sixty-three".