72939343 has 2 divisors, whose sum is σ = 72939344. Its totient is φ = 72939342.

The previous prime is 72939341. The next prime is 72939397. The reversal of 72939343 is 34393927.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72939343 - 2¹ = 72939341 is a prime.

Together with 72939341, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 72939296 and 72939305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72939341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36469671 + 36469672.

It is an arithmetic number, because the mean of its divisors is an integer number (36469672).

Almost surely, 2^72939343 is an apocalyptic number.

72939343 is a deficient number, since it is larger than the sum of its proper divisors (1).

72939343 is an equidigital number, since it uses as much as digits as its factorization.

72939343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 40.

The square root of 72939343 is about 8540.4533252047. The cubic root of 72939343 is about 417.8181313165.

The spelling of 72939343 in words is "seventy-two million, nine hundred thirty-nine thousand, three hundred forty-three".