80449393 has 4 divisors (see below), whose sum is σ = 83223540. Its totient is φ = 77675248.

The previous prime is 80449381. The next prime is 80449409. The reversal of 80449393 is 39394408.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13667809 + 66781584 = 3697^2 + 8172^2 .

It is a cyclic number.

It is not a de Polignac number, because 80449393 - 2⁵ = 80449361 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (80449793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1387030 + ... + 1387087.

It is an arithmetic number, because the mean of its divisors is an integer number (20805885).

Almost surely, 2^80449393 is an apocalyptic number.

It is an amenable number.

80449393 is a deficient number, since it is larger than the sum of its proper divisors (2774147).

80449393 is a wasteful number, since it uses less digits than its factorization.

80449393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2774146.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 80449393 is about 8969.3585612350. The cubic root of 80449393 is about 431.6922551745.

The spelling of 80449393 in words is "eighty million, four hundred forty-nine thousand, three hundred ninety-three".