8000019 has 16 divisors (see below), whose sum is σ = 11924640. Its totient is φ = 5300640.

The previous prime is 8000017. The next prime is 8000023. The reversal of 8000019 is 9100008.

It is not a de Polignac number, because 8000019 - 2¹ = 8000017 is a prime.

It is a super-2 number, since 2×8000019² = 128000608000722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7999965 and 8000010.

It is not an unprimeable number, because it can be changed into a prime (8000017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4069 + ... + 5705.

It is an arithmetic number, because the mean of its divisors is an integer number (745290).

Almost surely, 2^8000019 is an apocalyptic number.

8000019 is a deficient number, since it is larger than the sum of its proper divisors (3924621).

8000019 is a wasteful number, since it uses less digits than its factorization.

8000019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1827 (or 1821 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 8000019 is about 2828.4304835014. The cubic root of 8000019 is about 200.0001583332. Note that the first 3 decimals are identical.

The spelling of 8000019 in words is "eight million, nineteen", and thus it is an aban number and an uban number.