349405145 has 8 divisors (see below), whose sum is σ = 419420040. Its totient is φ = 279434880.

The previous prime is 349405141. The next prime is 349405163. The reversal of 349405145 is 541504943.

It can be written as a sum of positive squares in 4 ways, for example, as 76230361 + 273174784 = 8731^2 + 16528^2 .

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

It is not a de Polignac number, because 349405145 - 2² = 349405141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (349405141) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9575 + ... + 28115.

It is an arithmetic number, because the mean of its divisors is an integer number (52427505).

Almost surely, 2^349405145 is an apocalyptic number.

It is an amenable number.

349405145 is a deficient number, since it is larger than the sum of its proper divisors (70014895).

349405145 is a wasteful number, since it uses less digits than its factorization.

349405145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22315.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 349405145 is about 18692.3820044423. The cubic root of 349405145 is about 704.3303971981.

The spelling of 349405145 in words is "three hundred forty-nine million, four hundred five thousand, one hundred forty-five".