349446872 has 16 divisors (see below), whose sum is σ = 655726560. Its totient is φ = 174586464.

The previous prime is 349446863. The next prime is 349446887. The reversal of 349446872 is 278644943.

It is a happy number.

It is a super-2 number, since 2×349446872² = 244226232701168768, which contains 22 as substring.

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, 5843 + ... + 27074.

It is an arithmetic number, because the mean of its divisors is an integer number (40982910).

Almost surely, 2^349446872 is an apocalyptic number.

It is an amenable number.

349446872 is a deficient number, since it is larger than the sum of its proper divisors (306279688).

349446872 is a wasteful number, since it uses less digits than its factorization.

349446872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34250 (or 34246 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 47.

The square root of 349446872 is about 18693.4981210045. The cubic root of 349446872 is about 704.3584338245.

The spelling of 349446872 in words is "three hundred forty-nine million, four hundred forty-six thousand, eight hundred seventy-two".