890087 has 4 divisors (see below), whose sum is σ = 971016. Its totient is φ = 809160.

The previous prime is 890083. The next prime is 890107. The reversal of 890087 is 780098.

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

It is not a de Polignac number, because 890087 - 2² = 890083 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 (890083) 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, 40448 + ... + 40469.

It is an arithmetic number, because the mean of its divisors is an integer number (242754).

2⁸⁹⁰⁰⁸⁷ is an apocalyptic number.

890087 is a deficient number, since it is larger than the sum of its proper divisors (80929).

890087 is a wasteful number, since it uses less digits than its factorization.

890087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80928.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 890087 is about 943.4442219867. Note that the first 3 decimals coincide. The cubic root of 890087 is about 96.1931513401.

The spelling of 890087 in words is "eight hundred ninety thousand, eighty-seven".