72839783 has 2 divisors, whose sum is σ = 72839784. Its totient is φ = 72839782.

The previous prime is 72839773. The next prime is 72839797. The reversal of 72839783 is 38793827.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72839783 - 2⁸ = 72839527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72839743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36419891 + 36419892.

It is an arithmetic number, because the mean of its divisors is an integer number (36419892).

Almost surely, 2^72839783 is an apocalyptic number.

72839783 is a deficient number, since it is larger than the sum of its proper divisors (1).

72839783 is an equidigital number, since it uses as much as digits as its factorization.

72839783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 47.

The square root of 72839783 is about 8534.6226044272. The cubic root of 72839783 is about 417.6279417130.

The spelling of 72839783 in words is "seventy-two million, eight hundred thirty-nine thousand, seven hundred eighty-three".