72839093 has 2 divisors, whose sum is σ = 72839094. Its totient is φ = 72839092.

The previous prime is 72839077. The next prime is 72839131. The reversal of 72839093 is 39093827.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60575089 + 12264004 = 7783^2 + 3502^2 .

It is a cyclic number.

It is not a de Polignac number, because 72839093 - 2⁴ = 72839077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72839093.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72839593) 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 as a sum of consecutive naturals, namely, 36419546 + 36419547.

It is an arithmetic number, because the mean of its divisors is an integer number (36419547).

Almost surely, 2^72839093 is an apocalyptic number.

It is an amenable number.

72839093 is a deficient number, since it is larger than the sum of its proper divisors (1).

72839093 is an equidigital number, since it uses as much as digits as its factorization.

72839093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 72839093 is about 8534.5821807514. The cubic root of 72839093 is about 417.6266230005.

The spelling of 72839093 in words is "seventy-two million, eight hundred thirty-nine thousand, ninety-three".