80654939 has 2 divisors, whose sum is σ = 80654940. Its totient is φ = 80654938.

The previous prime is 80654933. The next prime is 80654941. The reversal of 80654939 is 93945608.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80654939 is a prime.

Together with 80654941, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80654939.

It is not a weakly prime, because it can be changed into another prime (80654933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40327469 + 40327470.

It is an arithmetic number, because the mean of its divisors is an integer number (40327470).

Almost surely, 2^80654939 is an apocalyptic number.

80654939 is a deficient number, since it is larger than the sum of its proper divisors (1).

80654939 is an equidigital number, since it uses as much as digits as its factorization.

80654939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 80654939 is about 8980.8094846734. The cubic root of 80654939 is about 432.0595964734.

The spelling of 80654939 in words is "eighty million, six hundred fifty-four thousand, nine hundred thirty-nine".