8172419 has 2 divisors, whose sum is σ = 8172420. Its totient is φ = 8172418.

The previous prime is 8172391. The next prime is 8172443. The reversal of 8172419 is 9142718.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8172419 is a prime.

It is a super-2 number, since 2×8172419² = 133576864623122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8172469) 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, 4086209 + 4086210.

It is an arithmetic number, because the mean of its divisors is an integer number (4086210).

Almost surely, 2^8172419 is an apocalyptic number.

8172419 is a deficient number, since it is larger than the sum of its proper divisors (1).

8172419 is an equidigital number, since it uses as much as digits as its factorization.

8172419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 32.

The square root of 8172419 is about 2858.7443047604. The cubic root of 8172419 is about 201.4266245162.

Subtracting 8172419 from its reverse (9142718), we obtain a cube (970299 = 99³).

The spelling of 8172419 in words is "eight million, one hundred seventy-two thousand, four hundred nineteen".