72939323 has 2 divisors, whose sum is σ = 72939324. Its totient is φ = 72939322.

The previous prime is 72939313. The next prime is 72939341. The reversal of 72939323 is 32393927.

It is a weak prime.

It is an emirp because it is prime and its reverse (32393927) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72939323 - 2⁶ = 72939259 is a prime.

It is not a weakly prime, because it can be changed into another prime (72939313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36469661 + 36469662.

It is an arithmetic number, because the mean of its divisors is an integer number (36469662).

Almost surely, 2^72939323 is an apocalyptic number.

72939323 is a deficient number, since it is larger than the sum of its proper divisors (1).

72939323 is an equidigital number, since it uses as much as digits as its factorization.

72939323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61236, while the sum is 38.

The square root of 72939323 is about 8540.4521543066. The cubic root of 72939323 is about 417.8180931279.

The spelling of 72939323 in words is "seventy-two million, nine hundred thirty-nine thousand, three hundred twenty-three".