349609738 has 4 divisors (see below), whose sum is σ = 524414610. Its totient is φ = 174804868.

The previous prime is 349609721. The next prime is 349609739. The reversal of 349609738 is 837906943.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 837906943 = 79 ⋅10606417.

It can be written as a sum of positive squares in only one way, i.e., 349203969 + 405769 = 18687^2 + 637^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 349609691 and 349609700.

It is not an unprimeable number, because it can be changed into a prime (349609739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 87402433 + ... + 87402436.

Almost surely, 2^349609738 is an apocalyptic number.

349609738 is a deficient number, since it is larger than the sum of its proper divisors (174804872).

349609738 is a wasteful number, since it uses less digits than its factorization.

349609738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174804871.

The product of its (nonzero) digits is 979776, while the sum is 49.

The square root of 349609738 is about 18697.8538340634. The cubic root of 349609738 is about 704.4678431346.

The spelling of 349609738 in words is "three hundred forty-nine million, six hundred nine thousand, seven hundred thirty-eight".