72910839 has 8 divisors (see below), whose sum is σ = 97676032. Its totient is φ = 48376440.

The previous prime is 72910829. The next prime is 72910861. The reversal of 72910839 is 93801927.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72910839 - 2⁷ = 72910711 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72910797 and 72910806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72910819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56959 + ... + 58224.

It is an arithmetic number, because the mean of its divisors is an integer number (12209504).

Almost surely, 2^72910839 is an apocalyptic number.

72910839 is a deficient number, since it is larger than the sum of its proper divisors (24765193).

72910839 is a wasteful number, since it uses less digits than its factorization.

72910839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115397.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 72910839 is about 8538.7843982619. The cubic root of 72910839 is about 417.7636977775.

The spelling of 72910839 in words is "seventy-two million, nine hundred ten thousand, eight hundred thirty-nine".