8340019 has 4 divisors (see below), whose sum is σ = 8358496. Its totient is φ = 8321544.

The previous prime is 8339987. The next prime is 8340041. The reversal of 8340019 is 9100438.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9100438 = 2 ⋅4550219.

It is a cyclic number.

It is not a de Polignac number, because 8340019 - 2⁵ = 8339987 is a prime.

It is a super-2 number, since 2×8340019² = 139111833840722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8339975 and 8340002.

It is not an unprimeable number, because it can be changed into a prime (8340049) 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 in 3 ways as a sum of consecutive naturals, for example, 8544 + ... + 9469.

It is an arithmetic number, because the mean of its divisors is an integer number (2089624).

Almost surely, 2^8340019 is an apocalyptic number.

8340019 is a deficient number, since it is larger than the sum of its proper divisors (18477).

8340019 is a wasteful number, since it uses less digits than its factorization.

8340019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18476.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 8340019 is about 2887.9091052178. The cubic root of 8340019 is about 202.7942701264.

The spelling of 8340019 in words is "eight million, three hundred forty thousand, nineteen".