890538653 has 2 divisors, whose sum is σ = 890538654. Its totient is φ = 890538652.

The previous prime is 890538613. The next prime is 890538661. The reversal of 890538653 is 356835098.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 854802169 + 35736484 = 29237^2 + 5978^2 .

It is a cyclic number.

It is not a de Polignac number, because 890538653 - 2¹⁰ = 890537629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 890538598 and 890538607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (890538613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445269326 + 445269327.

It is an arithmetic number, because the mean of its divisors is an integer number (445269327).

Almost surely, 2^890538653 is an apocalyptic number.

It is an amenable number.

890538653 is a deficient number, since it is larger than the sum of its proper divisors (1).

890538653 is an equidigital number, since it uses as much as digits as its factorization.

890538653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 777600, while the sum is 47.

The square root of 890538653 is about 29841.8942595808. The cubic root of 890538653 is about 962.0941888059.

The spelling of 890538653 in words is "eight hundred ninety million, five hundred thirty-eight thousand, six hundred fifty-three".