80972039 has 2 divisors, whose sum is σ = 80972040. Its totient is φ = 80972038.

The previous prime is 80972027. The next prime is 80972041. The reversal of 80972039 is 93027908.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80972039 - 2²⁰ = 79923463 is a prime.

Together with 80972041, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 80971993 and 80972011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80972239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40486019 + 40486020.

It is an arithmetic number, because the mean of its divisors is an integer number (40486020).

Almost surely, 2^80972039 is an apocalyptic number.

80972039 is a deficient number, since it is larger than the sum of its proper divisors (1).

80972039 is an equidigital number, since it uses as much as digits as its factorization.

80972039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 80972039 is about 8998.4464770315. The cubic root of 80972039 is about 432.6250792634.

The spelling of 80972039 in words is "eighty million, nine hundred seventy-two thousand, thirty-nine".