872340047 has 4 divisors (see below), whose sum is σ = 873664440. Its totient is φ = 871015656.

The previous prime is 872340037. The next prime is 872340059. The reversal of 872340047 is 740043278.

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 872340047 - 2¹² = 872335951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 872339989 and 872340016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872340037) 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, 661208 + ... + 662525.

It is an arithmetic number, because the mean of its divisors is an integer number (218416110).

Almost surely, 2^872340047 is an apocalyptic number.

872340047 is a deficient number, since it is larger than the sum of its proper divisors (1324393).

872340047 is a wasteful number, since it uses less digits than its factorization.

872340047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324392.

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 872340047 is about 29535.4032814858. The cubic root of 872340047 is about 955.4954062769.

The spelling of 872340047 in words is "eight hundred seventy-two million, three hundred forty thousand, forty-seven".