890969 has 2 divisors, whose sum is σ = 890970. Its totient is φ = 890968.

The previous prime is 890963. The next prime is 890993. The reversal of 890969 is 969098.

890969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 855625 + 35344 = 925^2 + 188^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-890969 is a prime.

It is a super-2 number, since 2×890969² = 1587651517922, which contains 22 as substring.

It is a Sophie Germain prime.

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

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (890963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445484 + 445485.

It is an arithmetic number, because the mean of its divisors is an integer number (445485).

2⁸⁹⁰⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

890969 is a deficient number, since it is larger than the sum of its proper divisors (1).

890969 is an equidigital number, since it uses as much as digits as its factorization.

890969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 890969 is about 943.9115424657. The cubic root of 890969 is about 96.2249139098.

The spelling of 890969 in words is "eight hundred ninety thousand, nine hundred sixty-nine".