80945387 has 2 divisors, whose sum is σ = 80945388. Its totient is φ = 80945386.

The previous prime is 80945383. The next prime is 80945413. The reversal of 80945387 is 78354908.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80945387 - 2² = 80945383 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80945383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40472693 + 40472694.

It is an arithmetic number, because the mean of its divisors is an integer number (40472694).

Almost surely, 2^80945387 is an apocalyptic number.

80945387 is a deficient number, since it is larger than the sum of its proper divisors (1).

80945387 is an equidigital number, since it uses as much as digits as its factorization.

80945387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 80945387 is about 8996.9654328557. The cubic root of 80945387 is about 432.5776077779.

The spelling of 80945387 in words is "eighty million, nine hundred forty-five thousand, three hundred eighty-seven".