80405386 has 16 divisors (see below), whose sum is σ = 121883328. Its totient is φ = 39780000.

The previous prime is 80405363. The next prime is 80405389. The reversal of 80405386 is 68350408.

80405386 = 19² + 20² + ... + 622².

It is not an unprimeable number, because it can be changed into a prime (80405389) 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 in 7 ways as a sum of consecutive naturals, for example, 133486 + ... + 134086.

It is an arithmetic number, because the mean of its divisors is an integer number (7617708).

Almost surely, 2^80405386 is an apocalyptic number.

80405386 is a deficient number, since it is larger than the sum of its proper divisors (41477942).

80405386 is a wasteful number, since it uses less digits than its factorization.

80405386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 80405386 is about 8966.9050402020. The cubic root of 80405386 is about 431.6135268154.

The spelling of 80405386 in words is "eighty million, four hundred five thousand, three hundred eighty-six".