80890449 has 4 divisors (see below), whose sum is σ = 107853936. Its totient is φ = 53926964.

The previous prime is 80890441. The next prime is 80890451. The reversal of 80890449 is 94409808.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80890449 - 2³ = 80890441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80890449.

It is not an unprimeable number, because it can be changed into a prime (80890441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13481739 + ... + 13481744.

It is an arithmetic number, because the mean of its divisors is an integer number (26963484).

Almost surely, 2^80890449 is an apocalyptic number.

It is an amenable number.

80890449 is a deficient number, since it is larger than the sum of its proper divisors (26963487).

80890449 is a wasteful number, since it uses less digits than its factorization.

80890449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26963486.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 80890449 is about 8993.9117740836. The cubic root of 80890449 is about 432.4797215035.

The spelling of 80890449 in words is "eighty million, eight hundred ninety thousand, four hundred forty-nine".