80449489 has 4 divisors (see below), whose sum is σ = 81230656. Its totient is φ = 79668324.

The previous prime is 80449483. The next prime is 80449519. The reversal of 80449489 is 98494408.

It is a happy number.

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 80449489 - 2⁷ = 80449361 is a prime.

It is a super-2 number, since 2×80449489² = 12944240560722242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80449483) 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, 390429 + ... + 390634.

It is an arithmetic number, because the mean of its divisors is an integer number (20307664).

Almost surely, 2^80449489 is an apocalyptic number.

It is an amenable number.

80449489 is a deficient number, since it is larger than the sum of its proper divisors (781167).

80449489 is a wasteful number, since it uses less digits than its factorization.

80449489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781166.

The product of its (nonzero) digits is 331776, while the sum is 46.

The square root of 80449489 is about 8969.3639127867. The cubic root of 80449489 is about 431.6924268867.

The spelling of 80449489 in words is "eighty million, four hundred forty-nine thousand, four hundred eighty-nine".