80462009 has 2 divisors, whose sum is σ = 80462010. Its totient is φ = 80462008.

The previous prime is 80461999. The next prime is 80462021. The reversal of 80462009 is 90026408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73908409 + 6553600 = 8597^2 + 2560^2 .

It is a cyclic number.

It is not a de Polignac number, because 80462009 - 2¹⁶ = 80396473 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (80462069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40231004 + 40231005.

It is an arithmetic number, because the mean of its divisors is an integer number (40231005).

Almost surely, 2^80462009 is an apocalyptic number.

It is an amenable number.

80462009 is a deficient number, since it is larger than the sum of its proper divisors (1).

80462009 is an equidigital number, since it uses as much as digits as its factorization.

80462009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 80462009 is about 8970.0618169553. The cubic root of 80462009 is about 431.7148198561.

The spelling of 80462009 in words is "eighty million, four hundred sixty-two thousand, nine".