349561345 has 12 divisors (see below), whose sum is σ = 487959444. Its totient is φ = 239699040.

The previous prime is 349561343. The next prime is 349561351. The reversal of 349561345 is 543165943.

It can be written as a sum of positive squares in 2 ways, for example, as 38638656 + 310922689 = 6216^2 + 17633^2 .

It is not a de Polignac number, because 349561345 - 2¹ = 349561343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 349561298 and 349561307.

It is not an unprimeable number, because it can be changed into a prime (349561343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 713146 + ... + 713635.

It is an arithmetic number, because the mean of its divisors is an integer number (40663287).

Almost surely, 2^349561345 is an apocalyptic number.

349561345 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

349561345 is a deficient number, since it is larger than the sum of its proper divisors (138398099).

349561345 is a wasteful number, since it uses less digits than its factorization.

349561345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426800 (or 1426793 counting only the distinct ones).

The product of its digits is 194400, while the sum is 40.

The square root of 349561345 is about 18696.5597102783. The cubic root of 349561345 is about 704.4353374750.

The spelling of 349561345 in words is "three hundred forty-nine million, five hundred sixty-one thousand, three hundred forty-five".