349610720905 has 32 divisors (see below), whose sum is σ = 428087649024. Its totient is φ = 274052868096.

The previous prime is 349610720867. The next prime is 349610720971. The reversal of 349610720905 is 509027016943.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 349610720905 - 2²¹ = 349608623753 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30403117 + ... + 30414613.

It is an arithmetic number, because the mean of its divisors is an integer number (13377739032).

Almost surely, 2^349610720905 is an apocalyptic number.

It is an amenable number.

349610720905 is a deficient number, since it is larger than the sum of its proper divisors (78476928119).

349610720905 is a wasteful number, since it uses less digits than its factorization.

349610720905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12225.

The product of its (nonzero) digits is 408240, while the sum is 46.

The spelling of 349610720905 in words is "three hundred forty-nine billion, six hundred ten million, seven hundred twenty thousand, nine hundred five".