80489945 has 8 divisors (see below), whose sum is σ = 96654336. Its totient is φ = 64347696.

The previous prime is 80489891. The next prime is 80489953. The reversal of 80489945 is 54998408.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80489945 - 2¹² = 80485849 is a prime.

It is a super-2 number, since 2×80489945² = 12957262492206050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80489945.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3944 + ... + 13286.

It is an arithmetic number, because the mean of its divisors is an integer number (12081792).

Almost surely, 2^80489945 is an apocalyptic number.

It is an amenable number.

80489945 is a deficient number, since it is larger than the sum of its proper divisors (16164391).

80489945 is a wasteful number, since it uses less digits than its factorization.

80489945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11071.

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 80489945 is about 8971.6188617217. The cubic root of 80489945 is about 431.7647771376.

The spelling of 80489945 in words is "eighty million, four hundred eighty-nine thousand, nine hundred forty-five".