349564417 has 4 divisors (see below), whose sum is σ = 352771540. Its totient is φ = 346357296.

The previous prime is 349564363. The next prime is 349564447. The reversal of 349564417 is 714465943.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 292546816 + 57017601 = 17104^2 + 7551^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-349564417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349564447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1603398 + ... + 1603615.

It is an arithmetic number, because the mean of its divisors is an integer number (88192885).

Almost surely, 2^349564417 is an apocalyptic number.

It is an amenable number.

349564417 is a deficient number, since it is larger than the sum of its proper divisors (3207123).

349564417 is a wasteful number, since it uses less digits than its factorization.

349564417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3207122.

The product of its digits is 362880, while the sum is 43.

The square root of 349564417 is about 18696.6418642493. The cubic root of 349564417 is about 704.4374010317.

The spelling of 349564417 in words is "three hundred forty-nine million, five hundred sixty-four thousand, four hundred seventeen".