349806091 has 4 divisors (see below), whose sum is σ = 361868400. Its totient is φ = 337743784.

The previous prime is 349806089. The next prime is 349806109. The reversal of 349806091 is 190608943.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 349806091 - 2¹ = 349806089 is a prime.

It is a super-3 number, since 3×349806091³ (a number of 27 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349806001) 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, 6031111 + ... + 6031168.

It is an arithmetic number, because the mean of its divisors is an integer number (90467100).

Almost surely, 2^349806091 is an apocalyptic number.

349806091 is a deficient number, since it is larger than the sum of its proper divisors (12062309).

349806091 is a wasteful number, since it uses less digits than its factorization.

349806091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12062308.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 349806091 is about 18703.1037798543. The cubic root of 349806091 is about 704.5997030072.

The spelling of 349806091 in words is "three hundred forty-nine million, eight hundred six thousand, ninety-one".