890961 has 4 divisors (see below), whose sum is σ = 1187952. Its totient is φ = 593972.

The previous prime is 890957. The next prime is 890963. The reversal of 890961 is 169098.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 890961 - 2² = 890957 is a prime.

It is an Ulam number.

It is a D-number.

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

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (890963) 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, 148491 + ... + 148496.

It is an arithmetic number, because the mean of its divisors is an integer number (296988).

2⁸⁹⁰⁹⁶¹ is an apocalyptic number.

It is an amenable number.

890961 is a deficient number, since it is larger than the sum of its proper divisors (296991).

890961 is a wasteful number, since it uses less digits than its factorization.

890961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296990.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 890961 is about 943.9073047710. The cubic root of 890961 is about 96.2246259081.

The spelling of 890961 in words is "eight hundred ninety thousand, nine hundred sixty-one".