72980939 has 2 divisors, whose sum is σ = 72980940. Its totient is φ = 72980938.

The previous prime is 72980927. The next prime is 72980951. The reversal of 72980939 is 93908927.

It is a balanced prime because it is at equal distance from previous prime (72980927) and next prime (72980951).

It is a cyclic number.

It is not a de Polignac number, because 72980939 - 2²⁰ = 71932363 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 72980893 and 72980902.

It is not a weakly prime, because it can be changed into another prime (72980969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36490469 + 36490470.

It is an arithmetic number, because the mean of its divisors is an integer number (36490470).

Almost surely, 2^72980939 is an apocalyptic number.

72980939 is a deficient number, since it is larger than the sum of its proper divisors (1).

72980939 is an equidigital number, since it uses as much as digits as its factorization.

72980939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 72980939 is about 8542.8882118403. Note that the first 3 decimals coincide. The cubic root of 72980939 is about 417.8975409537.

The spelling of 72980939 in words is "seventy-two million, nine hundred eighty thousand, nine hundred thirty-nine".