8140019 has 4 divisors (see below), whose sum is σ = 8194800. Its totient is φ = 8085240.

The previous prime is 8140009. The next prime is 8140043. The reversal of 8140019 is 9100418.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8140019 - 2¹⁶ = 8074483 is a prime.

It is a super-2 number, since 2×8140019² = 132519818640722, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 8139976 and 8140003.

It is not an unprimeable number, because it can be changed into a prime (8140009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27167 + ... + 27464.

It is an arithmetic number, because the mean of its divisors is an integer number (2048700).

Almost surely, 2^8140019 is an apocalyptic number.

8140019 is a deficient number, since it is larger than the sum of its proper divisors (54781).

8140019 is a wasteful number, since it uses less digits than its factorization.

8140019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54780.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 8140019 is about 2853.0718532838. The cubic root of 8140019 is about 201.1600830266.

The spelling of 8140019 in words is "eight million, one hundred forty thousand, nineteen".