349139105 has 8 divisors (see below), whose sum is σ = 478819392. Its totient is φ = 239409648.

The previous prime is 349139101. The next prime is 349139111. The reversal of 349139105 is 501931943.

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

It is a cyclic number.

It is not a de Polignac number, because 349139105 - 2² = 349139101 is a prime.

It is a super-2 number, since 2×349139105² = 243796229280402050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 9975403 = 349139105 / (3 + 4 + 9 + 1 + 3 + 9 + 1 + 0 + 5).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349139101) 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, 4987667 + ... + 4987736.

It is an arithmetic number, because the mean of its divisors is an integer number (59852424).

Almost surely, 2^349139105 is an apocalyptic number.

349139105 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

349139105 is a deficient number, since it is larger than the sum of its proper divisors (129680287).

349139105 is an equidigital number, since it uses as much as digits as its factorization.

349139105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9975415.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 349139105 is about 18685.2643813247. The cubic root of 349139105 is about 704.1515907902.

The spelling of 349139105 in words is "three hundred forty-nine million, one hundred thirty-nine thousand, one hundred five".