80047813 has 2 divisors, whose sum is σ = 80047814. Its totient is φ = 80047812.

The previous prime is 80047771. The next prime is 80047819. The reversal of 80047813 is 31874008.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72982849 + 7064964 = 8543^2 + 2658^2 .

It is a cyclic number.

It is not a de Polignac number, because 80047813 - 2¹⁷ = 79916741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80047819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40023906 + 40023907.

It is an arithmetic number, because the mean of its divisors is an integer number (40023907).

Almost surely, 2^80047813 is an apocalyptic number.

It is an amenable number.

80047813 is a deficient number, since it is larger than the sum of its proper divisors (1).

80047813 is an equidigital number, since it uses as much as digits as its factorization.

80047813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 80047813 is about 8946.9443387114. The cubic root of 80047813 is about 430.9727625655.

The spelling of 80047813 in words is "eighty million, forty-seven thousand, eight hundred thirteen".