329689940 has 12 divisors (see below), whose sum is σ = 692348916. Its totient is φ = 131875968.

The previous prime is 329689883. The next prime is 329689999. The reversal of 329689940 is 49986923.

It can be written as a sum of positive squares in 2 ways, for example, as 55323844 + 274366096 = 7438^2 + 16564^2 .

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8242229 + ... + 8242268.

It is an arithmetic number, because the mean of its divisors is an integer number (57695743).

Almost surely, 2^329689940 is an apocalyptic number.

It is an amenable number.

329689940 is an abundant number, since it is smaller than the sum of its proper divisors (362658976).

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

329689940 is a wasteful number, since it uses less digits than its factorization.

329689940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16484506 (or 16484504 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 50.

The square root of 329689940 is about 18157.3659984041. The cubic root of 329689940 is about 690.8258263106.

The spelling of 329689940 in words is "three hundred twenty-nine million, six hundred eighty-nine thousand, nine hundred forty".