80509049 has 2 divisors, whose sum is σ = 80509050. Its totient is φ = 80509048.

The previous prime is 80509031. The next prime is 80509069. The reversal of 80509049 is 94090508.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78198649 + 2310400 = 8843^2 + 1520^2 .

It is a cyclic number.

It is not a de Polignac number, because 80509049 - 2⁸ = 80508793 is a prime.

It is a super-3 number, since 3×80509049³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (80509069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40254524 + 40254525.

It is an arithmetic number, because the mean of its divisors is an integer number (40254525).

Almost surely, 2^80509049 is an apocalyptic number.

It is an amenable number.

80509049 is a deficient number, since it is larger than the sum of its proper divisors (1).

80509049 is an equidigital number, since it uses as much as digits as its factorization.

80509049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 80509049 is about 8972.6834893470. The cubic root of 80509049 is about 431.7989337097.

The spelling of 80509049 in words is "eighty million, five hundred nine thousand, forty-nine".