890381 has 4 divisors (see below), whose sum is σ = 902652. Its totient is φ = 878112.

The previous prime is 890377. The next prime is 890419. The reversal of 890381 is 183098.

It is a happy number.

890381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 570025 + 320356 = 755^2 + 566^2 .

It is a cyclic number.

It is not a de Polignac number, because 890381 - 2² = 890377 is a prime.

It is a super-2 number, since 2×890381² = 1585556650322, which contains 22 as substring.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (890371) 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, 6026 + ... + 6171.

It is an arithmetic number, because the mean of its divisors is an integer number (225663).

2⁸⁹⁰³⁸¹ is an apocalyptic number.

It is an amenable number.

890381 is a deficient number, since it is larger than the sum of its proper divisors (12271).

890381 is a wasteful number, since it uses less digits than its factorization.

890381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12270.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 890381 is about 943.6000211954. The cubic root of 890381 is about 96.2037411938.

The spelling of 890381 in words is "eight hundred ninety thousand, three hundred eighty-one".