349394680 has 32 divisors (see below), whose sum is σ = 787366800. Its totient is φ = 139539456.

The previous prime is 349394657. The next prime is 349394681. The reversal of 349394680 is 86493943.

It is a super-3 number, since 3×349394680³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 349394680.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349394681) 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, 20431 + ... + 33409.

Almost surely, 2^349394680 is an apocalyptic number.

It is an amenable number.

349394680 is an abundant number, since it is smaller than the sum of its proper divisors (437972120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

349394680 is a wasteful number, since it uses less digits than its factorization.

349394680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13663 (or 13659 counting only the distinct ones).

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

The square root of 349394680 is about 18692.1020754756. The cubic root of 349394680 is about 704.3233653505.

The spelling of 349394680 in words is "three hundred forty-nine million, three hundred ninety-four thousand, six hundred eighty".