349209698765 has 8 divisors (see below), whose sum is σ = 419101322208. Its totient is φ = 279334636560.

The previous prime is 349209698737. The next prime is 349209698767. The reversal of 349209698765 is 567896902943.

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

It is not a de Polignac number, because 349209698765 - 2⁶ = 349209698701 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 349209698695 and 349209698704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349209698767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4093871 + ... + 4178300.

It is an arithmetic number, because the mean of its divisors is an integer number (52387665276).

Almost surely, 2^349209698765 is an apocalyptic number.

It is an amenable number.

349209698765 is a deficient number, since it is larger than the sum of its proper divisors (69891623443).

349209698765 is an equidigital number, since it uses as much as digits as its factorization.

349209698765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8280619.

The product of its (nonzero) digits is 176359680, while the sum is 68.

The spelling of 349209698765 in words is "three hundred forty-nine billion, two hundred nine million, six hundred ninety-eight thousand, seven hundred sixty-five".