349577809 has 9 divisors (see below), whose sum is σ = 406804041. Its totient is φ = 299525940.

The previous prime is 349577807. The next prime is 349577843. The reversal of 349577809 is 908775943.

The square root of 349577809 is 18697.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 349577809 - 2¹ = 349577807 is a prime.

It is not an unprimeable number, because it can be changed into a prime (349577807) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 129544 + ... + 132214.

It is an arithmetic number, because the mean of its divisors is an integer number (45200449).

Almost surely, 2^349577809 is an apocalyptic number.

349577809 is the 18697-th square number.

349577809 is the 9349-th centered octagonal number.

It is an amenable number.

349577809 is a deficient number, since it is larger than the sum of its proper divisors (57226232).

349577809 is an frugal number, since it uses more digits than its factorization.

349577809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5356 (or 2678 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 52.

The cubic root of 349577809 is about 704.4463967082.

The spelling of 349577809 in words is "three hundred forty-nine million, five hundred seventy-seven thousand, eight hundred nine".