80494309 has 6 divisors (see below), whose sum is σ = 93636294. Its totient is φ = 68995080.

The previous prime is 80494283. The next prime is 80494339. The reversal of 80494309 is 90349408.

It can be written as a sum of positive squares in only one way, i.e., 77053284 + 3441025 = 8778^2 + 1855^2 .

It is not a de Polignac number, because 80494309 - 2⁹ = 80493797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80494339) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 821322 + ... + 821419.

It is an arithmetic number, because the mean of its divisors is an integer number (15606049).

Almost surely, 2^80494309 is an apocalyptic number.

It is an amenable number.

80494309 is a deficient number, since it is larger than the sum of its proper divisors (13141985).

80494309 is a wasteful number, since it uses less digits than its factorization.

80494309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642755 (or 1642748 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 80494309 is about 8971.8620698270. The cubic root of 80494309 is about 431.7725801306.

The spelling of 80494309 in words is "eighty million, four hundred ninety-four thousand, three hundred nine".