326890901 has 2 divisors, whose sum is σ = 326890902. Its totient is φ = 326890900.

The previous prime is 326890897. The next prime is 326890913. The reversal of 326890901 is 109098623.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 244171876 + 82719025 = 15626^2 + 9095^2 .

It is an emirp because it is prime and its reverse (109098623) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 326890901 - 2² = 326890897 is a prime.

It is a super-2 number, since 2×326890901² = 213715322313183602, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (326890931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163445450 + 163445451.

It is an arithmetic number, because the mean of its divisors is an integer number (163445451).

Almost surely, 2^326890901 is an apocalyptic number.

It is an amenable number.

326890901 is a deficient number, since it is larger than the sum of its proper divisors (1).

326890901 is an equidigital number, since it uses as much as digits as its factorization.

326890901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 326890901 is about 18080.1244741290. The cubic root of 326890901 is about 688.8652503056.

The spelling of 326890901 in words is "three hundred twenty-six million, eight hundred ninety thousand, nine hundred one".