349746091 has 4 divisors (see below), whose sum is σ = 368153800. Its totient is φ = 331338384.

The previous prime is 349746043. The next prime is 349746109. The reversal of 349746091 is 190647943.

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 349746091 - 2⁹ = 349745579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349746191) 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, 9203826 + ... + 9203863.

It is an arithmetic number, because the mean of its divisors is an integer number (92038450).

Almost surely, 2^349746091 is an apocalyptic number.

349746091 is a deficient number, since it is larger than the sum of its proper divisors (18407709).

349746091 is a wasteful number, since it uses less digits than its factorization.

349746091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18407708.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 349746091 is about 18701.4996992220. The cubic root of 349746091 is about 704.5594155445.

The spelling of 349746091 in words is "three hundred forty-nine million, seven hundred forty-six thousand, ninety-one".