72337789 has 2 divisors, whose sum is σ = 72337790. Its totient is φ = 72337788.

The previous prime is 72337777. The next prime is 72337801. The reversal of 72337789 is 98773327.

It is a balanced prime because it is at equal distance from previous prime (72337777) and next prime (72337801).

It can be written as a sum of positive squares in only one way, i.e., 39275289 + 33062500 = 6267^2 + 5750^2 .

It is an emirp because it is prime and its reverse (98773327) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72337789 - 2⁵ = 72337757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72337709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36168894 + 36168895.

It is an arithmetic number, because the mean of its divisors is an integer number (36168895).

Almost surely, 2^72337789 is an apocalyptic number.

It is an amenable number.

72337789 is a deficient number, since it is larger than the sum of its proper divisors (1).

72337789 is an equidigital number, since it uses as much as digits as its factorization.

72337789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 444528, while the sum is 46.

The square root of 72337789 is about 8505.1624910992. The cubic root of 72337789 is about 416.6663326575. Note that the first 3 decimals are identical.

The spelling of 72337789 in words is "seventy-two million, three hundred thirty-seven thousand, seven hundred eighty-nine".