80940487 has 4 divisors (see below), whose sum is σ = 82467720. Its totient is φ = 79413256.

The previous prime is 80940467. The next prime is 80940493. The reversal of 80940487 is 78404908.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80940487 - 2⁷ = 80940359 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80940467) 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, 763537 + ... + 763642.

It is an arithmetic number, because the mean of its divisors is an integer number (20616930).

Almost surely, 2^80940487 is an apocalyptic number.

80940487 is a deficient number, since it is larger than the sum of its proper divisors (1527233).

80940487 is a wasteful number, since it uses less digits than its factorization.

80940487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527232.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 80940487 is about 8996.6931146950. The cubic root of 80940487 is about 432.5688789583.

The spelling of 80940487 in words is "eighty million, nine hundred forty thousand, four hundred eighty-seven".