8401919 has 2 divisors, whose sum is σ = 8401920. Its totient is φ = 8401918.

The previous prime is 8401907. The next prime is 8401949. The reversal of 8401919 is 9191048.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8401919 is a prime.

It is a super-2 number, since 2×8401919² = 141184485765122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8401949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4200959 + 4200960.

It is an arithmetic number, because the mean of its divisors is an integer number (4200960).

Almost surely, 2^8401919 is an apocalyptic number.

8401919 is a deficient number, since it is larger than the sum of its proper divisors (1).

8401919 is an equidigital number, since it uses as much as digits as its factorization.

8401919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 8401919 is about 2898.6063892843. The cubic root of 8401919 is about 203.2947500622.

The spelling of 8401919 in words is "eight million, four hundred one thousand, nine hundred nineteen".