72389347 has 2 divisors, whose sum is σ = 72389348. Its totient is φ = 72389346.

The previous prime is 72389341. The next prime is 72389389. The reversal of 72389347 is 74398327.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72389347 - 2¹¹ = 72387299 is a prime.

It is not a weakly prime, because it can be changed into another prime (72389341) 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, 36194673 + 36194674.

It is an arithmetic number, because the mean of its divisors is an integer number (36194674).

Almost surely, 2^72389347 is an apocalyptic number.

72389347 is a deficient number, since it is larger than the sum of its proper divisors (1).

72389347 is an equidigital number, since it uses as much as digits as its factorization.

72389347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 43.

The square root of 72389347 is about 8508.1929338726. The cubic root of 72389347 is about 416.7653006671.

The spelling of 72389347 in words is "seventy-two million, three hundred eighty-nine thousand, three hundred forty-seven".