349628813 has 8 divisors (see below), whose sum is σ = 353345760. Its totient is φ = 345920400.

The previous prime is 349628809. The next prime is 349628821. The reversal of 349628813 is 318826943.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 349628813 - 2² = 349628809 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349628833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110903 + ... + 114011.

It is an arithmetic number, because the mean of its divisors is an integer number (44168220).

Almost surely, 2^349628813 is an apocalyptic number.

It is an amenable number.

349628813 is a deficient number, since it is larger than the sum of its proper divisors (3716947).

349628813 is a wasteful number, since it uses less digits than its factorization.

349628813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4267.

The product of its digits is 248832, while the sum is 44.

The square root of 349628813 is about 18698.3639123855. The cubic root of 349628813 is about 704.4806550200.

The spelling of 349628813 in words is "three hundred forty-nine million, six hundred twenty-eight thousand, eight hundred thirteen".