329748091 has 4 divisors (see below), whose sum is σ = 332265384. Its totient is φ = 327230800.

The previous prime is 329748077. The next prime is 329748121. The reversal of 329748091 is 190847923.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 329748091 - 2¹³ = 329739899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (329740091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1258450 + ... + 1258711.

It is an arithmetic number, because the mean of its divisors is an integer number (83066346).

Almost surely, 2^329748091 is an apocalyptic number.

329748091 is a deficient number, since it is larger than the sum of its proper divisors (2517293).

329748091 is a wasteful number, since it uses less digits than its factorization.

329748091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2517292.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 329748091 is about 18158.9672338490. The cubic root of 329748091 is about 690.8664400773.

The spelling of 329748091 in words is "three hundred twenty-nine million, seven hundred forty-eight thousand, ninety-one".