328800091 has 2 divisors, whose sum is σ = 328800092. Its totient is φ = 328800090.

The previous prime is 328800049. The next prime is 328800107. The reversal of 328800091 is 190008823.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 328800091 - 2²¹ = 326702939 is a prime.

It is not a weakly prime, because it can be changed into another prime (328800001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164400045 + 164400046.

It is an arithmetic number, because the mean of its divisors is an integer number (164400046).

Almost surely, 2^328800091 is an apocalyptic number.

328800091 is a deficient number, since it is larger than the sum of its proper divisors (1).

328800091 is an equidigital number, since it uses as much as digits as its factorization.

328800091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 328800091 is about 18132.8456398879. The cubic root of 328800091 is about 690.2037422558.

The spelling of 328800091 in words is "three hundred twenty-eight million, eight hundred thousand, ninety-one".