349691855 has 8 divisors (see below), whose sum is σ = 421125264. Its totient is φ = 278756800.

The previous prime is 349691851. The next prime is 349691857. The reversal of 349691855 is 558196943.

It is a happy number.

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

It is not a de Polignac number, because 349691855 - 2² = 349691851 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349691851) 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, 123041 + ... + 125850.

It is an arithmetic number, because the mean of its divisors is an integer number (52640658).

Almost surely, 2^349691855 is an apocalyptic number.

349691855 is a deficient number, since it is larger than the sum of its proper divisors (71433409).

349691855 is a wasteful number, since it uses less digits than its factorization.

349691855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249177.

The product of its digits is 1166400, while the sum is 50.

The square root of 349691855 is about 18700.0495988647. The cubic root of 349691855 is about 704.5229943989.

The spelling of 349691855 in words is "three hundred forty-nine million, six hundred ninety-one thousand, eight hundred fifty-five".