349390864 has 15 divisors (see below), whose sum is σ = 677089693. Its totient is φ = 174658048.

The previous prime is 349390841. The next prime is 349390871. The reversal of 349390864 is 468093943.

The square root of 349390864 is 18692.

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

It can be written as a sum of positive squares in only one way, i.e., 334890000 + 14500864 = 18300^2 + 3808^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 72432 + ... + 77104.

Almost surely, 2^349390864 is an apocalyptic number.

349390864 is the 18692-nd square number.

It is an amenable number.

349390864 is a deficient number, since it is larger than the sum of its proper divisors (327698829).

349390864 is an frugal number, since it uses more digits than its factorization.

349390864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9354 (or 4675 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 46.

The cubic root of 349390864 is about 704.3208011941.

The spelling of 349390864 in words is "three hundred forty-nine million, three hundred ninety thousand, eight hundred sixty-four".