72846839 has 4 divisors (see below), whose sum is σ = 78450456. Its totient is φ = 67243224.

The previous prime is 72846833. The next prime is 72846841. The reversal of 72846839 is 93864827.

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 72846839 - 2⁸ = 72846583 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72846793 and 72846802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72846833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2801789 + ... + 2801814.

It is an arithmetic number, because the mean of its divisors is an integer number (19612614).

Almost surely, 2^72846839 is an apocalyptic number.

72846839 is a deficient number, since it is larger than the sum of its proper divisors (5603617).

72846839 is a wasteful number, since it uses less digits than its factorization.

72846839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5603616.

The product of its digits is 580608, while the sum is 47.

The square root of 72846839 is about 8535.0359694614. The cubic root of 72846839 is about 417.6414265033.

The spelling of 72846839 in words is "seventy-two million, eight hundred forty-six thousand, eight hundred thirty-nine".