72399337 has 2 divisors, whose sum is σ = 72399338. Its totient is φ = 72399336.

The previous prime is 72399319. The next prime is 72399359. The reversal of 72399337 is 73399327.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67716441 + 4682896 = 8229^2 + 2164^2 .

It is a cyclic number.

It is not a de Polignac number, because 72399337 - 2¹¹ = 72397289 is a prime.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 72399293 and 72399302.

It is not a weakly prime, because it can be changed into another prime (72399637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36199668 + 36199669.

It is an arithmetic number, because the mean of its divisors is an integer number (36199669).

Almost surely, 2^72399337 is an apocalyptic number.

It is an amenable number.

72399337 is a deficient number, since it is larger than the sum of its proper divisors (1).

72399337 is an equidigital number, since it uses as much as digits as its factorization.

72399337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 214326, while the sum is 43.

The square root of 72399337 is about 8508.7799948054. The cubic root of 72399337 is about 416.7844715075.

The spelling of 72399337 in words is "seventy-two million, three hundred ninety-nine thousand, three hundred thirty-seven".