80462909 has 2 divisors, whose sum is σ = 80462910. Its totient is φ = 80462908.

The previous prime is 80462903. The next prime is 80462969. The reversal of 80462909 is 90926408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70190884 + 10272025 = 8378^2 + 3205^2 .

It is a cyclic number.

It is not a de Polignac number, because 80462909 - 2²⁴ = 63685693 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80462903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40231454 + 40231455.

It is an arithmetic number, because the mean of its divisors is an integer number (40231455).

Almost surely, 2^80462909 is an apocalyptic number.

It is an amenable number.

80462909 is a deficient number, since it is larger than the sum of its proper divisors (1).

80462909 is an equidigital number, since it uses as much as digits as its factorization.

80462909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 80462909 is about 8970.1119836934. Note that the first 3 decimals coincide. The cubic root of 80462909 is about 431.7164294849.

The spelling of 80462909 in words is "eighty million, four hundred sixty-two thousand, nine hundred nine".