7998019 has 2 divisors, whose sum is σ = 7998020. Its totient is φ = 7998018.

The previous prime is 7998013. The next prime is 7998047. The reversal of 7998019 is 9108997.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7998019 - 2¹⁹ = 7473731 is a prime.

It is a super-2 number, since 2×7998019² = 127936615848722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7998013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3999009 + 3999010.

It is an arithmetic number, because the mean of its divisors is an integer number (3999010).

Almost surely, 2^7998019 is an apocalyptic number.

7998019 is a deficient number, since it is larger than the sum of its proper divisors (1).

7998019 is an equidigital number, since it uses as much as digits as its factorization.

7998019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 43.

The square root of 7998019 is about 2828.0769084309. The cubic root of 7998019 is about 199.9834903039.

The spelling of 7998019 in words is "seven million, nine hundred ninety-eight thousand, nineteen".