877990 has 16 divisors (see below), whose sum is σ = 1663920. Its totient is φ = 332640.

The previous prime is 877949. The next prime is 877997. The reversal of 877990 is 99778.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (877997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2121 + ... + 2500.

It is an arithmetic number, because the mean of its divisors is an integer number (103995).

2⁸⁷⁷⁹⁹⁰ is an apocalyptic number.

877990 is a deficient number, since it is larger than the sum of its proper divisors (785930).

877990 is a wasteful number, since it uses less digits than its factorization.

877990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4647.

The product of its (nonzero) digits is 31752, while the sum is 40.

The square root of 877990 is about 937.0112059095. The cubic root of 877990 is about 95.7553812645.

The spelling of 877990 in words is "eight hundred seventy-seven thousand, nine hundred ninety".