8722019 has 2 divisors, whose sum is σ = 8722020. Its totient is φ = 8722018.

The previous prime is 8722009. The next prime is 8722027. The reversal of 8722019 is 9102278.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8722019 - 2⁸ = 8721763 is a prime.

It is a super-2 number, since 2×8722019² = 152147230872722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8721982 and 8722000.

It is not a weakly prime, because it can be changed into another prime (8722009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4361009 + 4361010.

It is an arithmetic number, because the mean of its divisors is an integer number (4361010).

Almost surely, 2^8722019 is an apocalyptic number.

8722019 is a deficient number, since it is larger than the sum of its proper divisors (1).

8722019 is an equidigital number, since it uses as much as digits as its factorization.

8722019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 8722019 is about 2953.3064520974. The cubic root of 8722019 is about 205.8443777049.

The spelling of 8722019 in words is "eight million, seven hundred twenty-two thousand, nineteen".