329947350091 has 4 divisors (see below), whose sum is σ = 329949464184. Its totient is φ = 329945236000.

The previous prime is 329947350071. The next prime is 329947350107. The reversal of 329947350091 is 190053749923.

It is a happy number.

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 329947350091 - 2⁹ = 329947349579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (329947350071) 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, 802510 + ... + 1141891.

It is an arithmetic number, because the mean of its divisors is an integer number (82487366046).

Almost surely, 2^329947350091 is an apocalyptic number.

329947350091 is a deficient number, since it is larger than the sum of its proper divisors (2114093).

329947350091 is a wasteful number, since it uses less digits than its factorization.

329947350091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2114092.

The product of its (nonzero) digits is 1837080, while the sum is 52.

The spelling of 329947350091 in words is "three hundred twenty-nine billion, nine hundred forty-seven million, three hundred fifty thousand, ninety-one".