349420705 has 8 divisors (see below), whose sum is σ = 425049192. Its totient is φ = 275707008.

The previous prime is 349420699. The next prime is 349420759. The reversal of 349420705 is 507024943.

It can be written as a sum of positive squares in 4 ways, for example, as 95082001 + 254338704 = 9751^2 + 15948^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-349420705 is a prime.

It is a super-3 number, since 3×349420705³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478294 + ... + 479023.

It is an arithmetic number, because the mean of its divisors is an integer number (53131149).

Almost surely, 2^349420705 is an apocalyptic number.

It is an amenable number.

349420705 is a deficient number, since it is larger than the sum of its proper divisors (75628487).

349420705 is an equidigital number, since it uses as much as digits as its factorization.

349420705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957395.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 349420705 is about 18692.7982121458. The cubic root of 349420705 is about 704.3408523182.

The spelling of 349420705 in words is "three hundred forty-nine million, four hundred twenty thousand, seven hundred five".