80017799 has 2 divisors, whose sum is σ = 80017800. Its totient is φ = 80017798.

The previous prime is 80017739. The next prime is 80017807. The reversal of 80017799 is 99771008.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80017799 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80017739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40008899 + 40008900.

It is an arithmetic number, because the mean of its divisors is an integer number (40008900).

Almost surely, 2^80017799 is an apocalyptic number.

80017799 is a deficient number, since it is larger than the sum of its proper divisors (1).

80017799 is an equidigital number, since it uses as much as digits as its factorization.

80017799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 41.

The square root of 80017799 is about 8945.2668490102. The cubic root of 80017799 is about 430.9188912893.

The spelling of 80017799 in words is "eighty million, seventeen thousand, seven hundred ninety-nine".