349809578 has 16 divisors (see below), whose sum is σ = 556160904. Its totient is φ = 164444160.

The previous prime is 349809569. The next prime is 349809583. The reversal of 349809578 is 875908943.

349809578 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 302516449 + 47293129 = 17393^2 + 6877^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31226 + ... + 40922.

Almost surely, 2^349809578 is an apocalyptic number.

349809578 is a deficient number, since it is larger than the sum of its proper divisors (206351326).

349809578 is a wasteful number, since it uses less digits than its factorization.

349809578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10777.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The square root of 349809578 is about 18703.1969994437. The cubic root of 349809578 is about 704.6020442386.

The spelling of 349809578 in words is "three hundred forty-nine million, eight hundred nine thousand, five hundred seventy-eight".