873990 has 80 divisors (see below), whose sum is σ = 2561328. Its totient is φ = 212544.

The previous prime is 873989. The next prime is 873991. The reversal of 873990 is 99378.

It is an interprime number because it is at equal distance from previous prime (873989) and next prime (873991).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 873990.

It is not an unprimeable number, because it can be changed into a prime (873991) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 10489 + ... + 10571.

2⁸⁷³⁹⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 873990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1280664).

873990 is an abundant number, since it is smaller than the sum of its proper divisors (1687338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

873990 is a wasteful number, since it uses less digits than its factorization.

873990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 873990 is about 934.8743231044. The cubic root of 873990 is about 95.6097438176.

The spelling of 873990 in words is "eight hundred seventy-three thousand, nine hundred ninety".