80404817 has 2 divisors, whose sum is σ = 80404818. Its totient is φ = 80404816.

The previous prime is 80404799. The next prime is 80404837. The reversal of 80404817 is 71840408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49056016 + 31348801 = 7004^2 + 5599^2 .

It is a cyclic number.

It is not a de Polignac number, because 80404817 - 2¹² = 80400721 is a prime.

It is a Chen prime.

It is equal to p_4691651 and since 80404817 and 4691651 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (80404837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40202408 + 40202409.

It is an arithmetic number, because the mean of its divisors is an integer number (40202409).

Almost surely, 2^80404817 is an apocalyptic number.

It is an amenable number.

80404817 is a deficient number, since it is larger than the sum of its proper divisors (1).

80404817 is an equidigital number, since it uses as much as digits as its factorization.

80404817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 80404817 is about 8966.8733123648. The cubic root of 80404817 is about 431.6125086884.

The spelling of 80404817 in words is "eighty million, four hundred four thousand, eight hundred seventeen".