349553980 has 24 divisors (see below), whose sum is σ = 734767488. Its totient is φ = 139687488.

The previous prime is 349553951. The next prime is 349554011. The reversal of 349553980 is 89355943.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 349553980.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14517 + ... + 30163.

It is an arithmetic number, because the mean of its divisors is an integer number (30615312).

Almost surely, 2^349553980 is an apocalyptic number.

It is an amenable number.

349553980 is an abundant number, since it is smaller than the sum of its proper divisors (385213508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

349553980 is a wasteful number, since it uses less digits than its factorization.

349553980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16773 (or 16771 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 46.

The square root of 349553980 is about 18696.3627478716. The cubic root of 349553980 is about 704.4303901290.

It can be divided in two parts, 3495 and 53980, that added together give a palindrome (57475).

The spelling of 349553980 in words is "three hundred forty-nine million, five hundred fifty-three thousand, nine hundred eighty".