72909283 has 2 divisors, whose sum is σ = 72909284. Its totient is φ = 72909282.

The previous prime is 72909233. The next prime is 72909299. The reversal of 72909283 is 38290927.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72909283 - 2¹³ = 72901091 is a prime.

It is not a weakly prime, because it can be changed into another prime (72909233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36454641 + 36454642.

It is an arithmetic number, because the mean of its divisors is an integer number (36454642).

Almost surely, 2^72909283 is an apocalyptic number.

72909283 is a deficient number, since it is larger than the sum of its proper divisors (1).

72909283 is an equidigital number, since it uses as much as digits as its factorization.

72909283 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 72909283 is about 8538.6932841038. The cubic root of 72909283 is about 417.7607259060.

The spelling of 72909283 in words is "seventy-two million, nine hundred nine thousand, two hundred eighty-three".