349558078 has 4 divisors (see below), whose sum is σ = 524337120. Its totient is φ = 174779038.

The previous prime is 349558073. The next prime is 349558109. The reversal of 349558078 is 870855943.

It is a semiprime because it is the product of two primes.

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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (349558073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 87389518 + ... + 87389521.

It is an arithmetic number, because the mean of its divisors is an integer number (131084280).

Almost surely, 2^349558078 is an apocalyptic number.

349558078 is a deficient number, since it is larger than the sum of its proper divisors (174779042).

349558078 is a wasteful number, since it uses less digits than its factorization.

349558078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174779041.

The product of its (nonzero) digits is 1209600, while the sum is 49.

The square root of 349558078 is about 18696.4723410594. The cubic root of 349558078 is about 704.4331429175.

The spelling of 349558078 in words is "three hundred forty-nine million, five hundred fifty-eight thousand, seventy-eight".