80047819 has 2 divisors, whose sum is σ = 80047820. Its totient is φ = 80047818.

The previous prime is 80047813. The next prime is 80047823. The reversal of 80047819 is 91874008.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80047819 is a prime.

It is a super-2 number, since 2×80047819² = 12815306653313522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (80047813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40023909 + 40023910.

It is an arithmetic number, because the mean of its divisors is an integer number (40023910).

Almost surely, 2^80047819 is an apocalyptic number.

80047819 is a deficient number, since it is larger than the sum of its proper divisors (1).

80047819 is an equidigital number, since it uses as much as digits as its factorization.

80047819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 80047819 is about 8946.9446740214. The cubic root of 80047819 is about 430.9727733334.

The spelling of 80047819 in words is "eighty million, forty-seven thousand, eight hundred nineteen".