349557890 has 32 divisors (see below), whose sum is σ = 698051520. Its totient is φ = 124955200.

The previous prime is 349557889. The next prime is 349557917. The reversal of 349557890 is 98755943.

349557890 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×349557890² = 244381436922504200, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 20441 + ... + 33420.

It is an arithmetic number, because the mean of its divisors is an integer number (21814110).

Almost surely, 2^349557890 is an apocalyptic number.

349557890 is a deficient number, since it is larger than the sum of its proper divisors (348493630).

349557890 is a wasteful number, since it uses less digits than its factorization.

349557890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53938.

The product of its (nonzero) digits is 1360800, while the sum is 50.

The square root of 349557890 is about 18696.4673133723. The cubic root of 349557890 is about 704.4330166309.

The spelling of 349557890 in words is "three hundred forty-nine million, five hundred fifty-seven thousand, eight hundred ninety".