349800845 has 4 divisors (see below), whose sum is σ = 419761020. Its totient is φ = 279840672.

The previous prime is 349800839. The next prime is 349800877. The reversal of 349800845 is 548008943.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 548008943 = 503 ⋅1089481.

It can be written as a sum of positive squares in 2 ways, for example, as 209757289 + 140043556 = 14483^2 + 11834^2 .

It is a cyclic number.

It is not a de Polignac number, because 349800845 - 2²⁴ = 333023629 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34980080 + ... + 34980089.

It is an arithmetic number, because the mean of its divisors is an integer number (104940255).

Almost surely, 2^349800845 is an apocalyptic number.

It is an amenable number.

349800845 is a deficient number, since it is larger than the sum of its proper divisors (69960175).

349800845 is an equidigital number, since it uses as much as digits as its factorization.

349800845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69960174.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 349800845 is about 18702.9635352262. The cubic root of 349800845 is about 704.5961807238.

The spelling of 349800845 in words is "three hundred forty-nine million, eight hundred thousand, eight hundred forty-five".