8919901 has 2 divisors, whose sum is σ = 8919902. Its totient is φ = 8919900.

The previous prime is 8919899. The next prime is 8919913. The reversal of 8919901 is 1099198.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8415801 + 504100 = 2901^2 + 710^2 .

It is a cyclic number.

It is not a de Polignac number, because 8919901 - 2¹ = 8919899 is a prime.

Together with 8919899, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8919931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4459950 + 4459951.

It is an arithmetic number, because the mean of its divisors is an integer number (4459951).

Almost surely, 2^8919901 is an apocalyptic number.

It is an amenable number.

8919901 is a deficient number, since it is larger than the sum of its proper divisors (1).

8919901 is an equidigital number, since it uses as much as digits as its factorization.

8919901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 37.

The square root of 8919901 is about 2986.6203307418. The cubic root of 8919901 is about 207.3894587103.

The spelling of 8919901 in words is "eight million, nine hundred nineteen thousand, nine hundred one".