80485991 has 8 divisors (see below), whose sum is σ = 84088800. Its totient is φ = 76938400.

The previous prime is 80485967. The next prime is 80485997. The reversal of 80485991 is 19958408.

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 80485991 - 2¹⁴ = 80469607 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 (80485997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10811 + ... + 16668.

It is an arithmetic number, because the mean of its divisors is an integer number (10511100).

Almost surely, 2^80485991 is an apocalyptic number.

80485991 is a deficient number, since it is larger than the sum of its proper divisors (3602809).

80485991 is a wasteful number, since it uses less digits than its factorization.

80485991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27609.

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 80485991 is about 8971.3984974473. The cubic root of 80485991 is about 431.7577069962.

The spelling of 80485991 in words is "eighty million, four hundred eighty-five thousand, nine hundred ninety-one".