72107439 has 8 divisors (see below), whose sum is σ = 96209712. Its totient is φ = 48038400.

The previous prime is 72107437. The next prime is 72107443. The reversal of 72107439 is 93470127.

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

It is not a de Polignac number, because 72107439 - 2¹ = 72107437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72107437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2704 + ... + 12309.

It is an arithmetic number, because the mean of its divisors is an integer number (12026214).

Almost surely, 2^72107439 is an apocalyptic number.

72107439 is a deficient number, since it is larger than the sum of its proper divisors (24102273).

72107439 is a wasteful number, since it uses less digits than its factorization.

72107439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16617.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 72107439 is about 8491.6099180309. The cubic root of 72107439 is about 416.2235896634.

The spelling of 72107439 in words is "seventy-two million, one hundred seven thousand, four hundred thirty-nine".