80449877 has 4 divisors (see below), whose sum is σ = 82624236. Its totient is φ = 78275520.

The previous prime is 80449871. The next prime is 80449879. The reversal of 80449877 is 77894408.

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 68574961 + 11874916 = 8281^2 + 3446^2 .

It is a cyclic number.

It is not a de Polignac number, because 80449877 - 2¹⁰ = 80448853 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 (80449871) 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 3 ways as a sum of consecutive naturals, for example, 1087124 + ... + 1087197.

It is an arithmetic number, because the mean of its divisors is an integer number (20656059).

Almost surely, 2^80449877 is an apocalyptic number.

It is an amenable number.

80449877 is a deficient number, since it is larger than the sum of its proper divisors (2174359).

80449877 is a wasteful number, since it uses less digits than its factorization.

80449877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2174358.

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 80449877 is about 8969.3855419421. The cubic root of 80449877 is about 431.6931208890.

The spelling of 80449877 in words is "eighty million, four hundred forty-nine thousand, eight hundred seventy-seven".