80509401 has 18 divisors (see below), whose sum is σ = 135278442. Its totient is φ = 46005120.

The previous prime is 80509393. The next prime is 80509417. The reversal of 80509401 is 10490508.

It can be written as a sum of positive squares in only one way, i.e., 79655625 + 853776 = 8925^2 + 924^2 .

It is not a de Polignac number, because 80509401 - 2³ = 80509393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80509421) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 90840 + ... + 91721.

It is an arithmetic number, because the mean of its divisors is an integer number (7515469).

Almost surely, 2^80509401 is an apocalyptic number.

It is an amenable number.

80509401 is a deficient number, since it is larger than the sum of its proper divisors (54769041).

80509401 is a wasteful number, since it uses less digits than its factorization.

80509401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182581 (or 182571 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 80509401 is about 8972.7031044162. The cubic root of 80509401 is about 431.7995630095.

Adding to 80509401 its reverse (10490508), we get a palindrome (90999909).

The spelling of 80509401 in words is "eighty million, five hundred nine thousand, four hundred one".