349343839672 has 32 divisors (see below), whose sum is σ = 662246442000. Its totient is φ = 172754854144.

The previous prime is 349343839667. The next prime is 349343839673. The reversal of 349343839672 is 276938343943.

It is a happy number.

It is a super-2 number, since 2×349343839672² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 349343839672.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349343839673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351178 + ... + 906649.

Almost surely, 2^349343839672 is an apocalyptic number.

It is an amenable number.

349343839672 is a deficient number, since it is larger than the sum of its proper divisors (312902602328).

349343839672 is a wasteful number, since it uses less digits than its factorization.

349343839672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258215 (or 1258211 counting only the distinct ones).

The product of its digits is 70543872, while the sum is 61.

The spelling of 349343839672 in words is "three hundred forty-nine billion, three hundred forty-three million, eight hundred thirty-nine thousand, six hundred seventy-two".