72853439 has 2 divisors, whose sum is σ = 72853440. Its totient is φ = 72853438.

The previous prime is 72853409. The next prime is 72853453. The reversal of 72853439 is 93435827.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72853439 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 72853396 and 72853405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72853409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36426719 + 36426720.

It is an arithmetic number, because the mean of its divisors is an integer number (36426720).

Almost surely, 2^72853439 is an apocalyptic number.

72853439 is a deficient number, since it is larger than the sum of its proper divisors (1).

72853439 is an equidigital number, since it uses as much as digits as its factorization.

72853439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 41.

The square root of 72853439 is about 8535.4226023086. The cubic root of 72853439 is about 417.6540390395.

The spelling of 72853439 in words is "seventy-two million, eight hundred fifty-three thousand, four hundred thirty-nine".