890981 has 8 divisors (see below), whose sum is σ = 1096704. Its totient is φ = 704880.

The previous prime is 890969. The next prime is 890993. The reversal of 890981 is 189098.

It is a happy number.

890981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (890969) and next prime (890993).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 890981 - 2¹⁰ = 889957 is a prime.

It is a super-2 number, since 2×890981² = 1587694284722, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a nialpdrome in base 16.

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 890981.

It is not an unprimeable number, because it can be changed into a prime (890941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4805 + ... + 4986.

It is an arithmetic number, because the mean of its divisors is an integer number (137088).

2⁸⁹⁰⁹⁸¹ is an apocalyptic number.

It is an amenable number.

890981 is a deficient number, since it is larger than the sum of its proper divisors (205723).

890981 is a wasteful number, since it uses less digits than its factorization.

890981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9811.

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 890981 is about 943.9178989722. The cubic root of 890981 is about 96.2253459090.

The spelling of 890981 in words is "eight hundred ninety thousand, nine hundred eighty-one".