8172039 has 4 divisors (see below), whose sum is σ = 10896056. Its totient is φ = 5448024.

The previous prime is 8172037. The next prime is 8172049. The reversal of 8172039 is 9302718.

It is a happy number.

8172039 is nontrivially palindromic in base 14.

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

It is not a de Polignac number, because 8172039 - 2¹ = 8172037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8171997 and 8172015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8172037) 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, 1362004 + ... + 1362009.

It is an arithmetic number, because the mean of its divisors is an integer number (2724014).

Almost surely, 2^8172039 is an apocalyptic number.

8172039 is a deficient number, since it is larger than the sum of its proper divisors (2724017).

8172039 is a wasteful number, since it uses less digits than its factorization.

8172039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2724016.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 8172039 is about 2858.6778412406. The cubic root of 8172039 is about 201.4235024988.

The spelling of 8172039 in words is "eight million, one hundred seventy-two thousand, thirty-nine".