72973339 has 2 divisors, whose sum is σ = 72973340. Its totient is φ = 72973338.

The previous prime is 72973321. The next prime is 72973343. The reversal of 72973339 is 93337927.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (93337927) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72973339 - 2¹¹ = 72971291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72973295 and 72973304.

It is not a weakly prime, because it can be changed into another prime (72974339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36486669 + 36486670.

It is an arithmetic number, because the mean of its divisors is an integer number (36486670).

Almost surely, 2^72973339 is an apocalyptic number.

72973339 is a deficient number, since it is larger than the sum of its proper divisors (1).

72973339 is an equidigital number, since it uses as much as digits as its factorization.

72973339 is an evil number, because the sum of its binary digits is even.

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

The square root of 72973339 is about 8542.4433858235. The cubic root of 72973339 is about 417.8830342820.

The spelling of 72973339 in words is "seventy-two million, nine hundred seventy-three thousand, three hundred thirty-nine".