80417279 has 2 divisors, whose sum is σ = 80417280. Its totient is φ = 80417278.

The previous prime is 80417263. The next prime is 80417287. The reversal of 80417279 is 97271408.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80417279 - 2⁴ = 80417263 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80417179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40208639 + 40208640.

It is an arithmetic number, because the mean of its divisors is an integer number (40208640).

Almost surely, 2^80417279 is an apocalyptic number.

80417279 is a deficient number, since it is larger than the sum of its proper divisors (1).

80417279 is an equidigital number, since it uses as much as digits as its factorization.

80417279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 80417279 is about 8967.5681764902. The cubic root of 80417279 is about 431.6348061801.

The spelling of 80417279 in words is "eighty million, four hundred seventeen thousand, two hundred seventy-nine".