349707784 has 16 divisors (see below), whose sum is σ = 655901820. Its totient is φ = 174800640.

The previous prime is 349707769. The next prime is 349707793. The reversal of 349707784 is 487707943.

It can be written as a sum of positive squares in 2 ways, for example, as 347076900 + 2630884 = 18630^2 + 1622^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43332 + ... + 50764.

Almost surely, 2^349707784 is an apocalyptic number.

It is an amenable number.

349707784 is a deficient number, since it is larger than the sum of its proper divisors (306194036).

349707784 is a wasteful number, since it uses less digits than its factorization.

349707784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13320 (or 13316 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 49.

The square root of 349707784 is about 18700.4755019759. The cubic root of 349707784 is about 704.5336916039.

The spelling of 349707784 in words is "three hundred forty-nine million, seven hundred seven thousand, seven hundred eighty-four".