80490887 has 4 divisors (see below), whose sum is σ = 80797200. Its totient is φ = 80184576.

The previous prime is 80490829. The next prime is 80490899. The reversal of 80490887 is 78809408.

It is a happy number.

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 80490887 - 2¹⁰ = 80489863 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 (80492887) 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, 152762 + ... + 153287.

It is an arithmetic number, because the mean of its divisors is an integer number (20199300).

Almost surely, 2^80490887 is an apocalyptic number.

80490887 is a deficient number, since it is larger than the sum of its proper divisors (306313).

80490887 is a wasteful number, since it uses less digits than its factorization.

80490887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306312.

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 80490887 is about 8971.6713604545. The cubic root of 80490887 is about 431.7664614923.

The spelling of 80490887 in words is "eighty million, four hundred ninety thousand, eight hundred eighty-seven".