349884684 has 120 divisors (see below), whose sum is σ = 977573520. Its totient is φ = 108739584.

The previous prime is 349884673. The next prime is 349884697. The reversal of 349884684 is 486488943.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 349884684.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 765384 + ... + 765840.

It is an arithmetic number, because the mean of its divisors is an integer number (8146446).

Almost surely, 2^349884684 is an apocalyptic number.

349884684 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 349884684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (488786760).

349884684 is an abundant number, since it is smaller than the sum of its proper divisors (627688836).

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

349884684 is a wasteful number, since it uses less digits than its factorization.

349884684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629 (or 618 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 54.

The square root of 349884684 is about 18705.2047302348. The cubic root of 349884684 is about 704.6524679143.

The spelling of 349884684 in words is "three hundred forty-nine million, eight hundred eighty-four thousand, six hundred eighty-four".