890575381 has 2 divisors, whose sum is σ = 890575382. Its totient is φ = 890575380.

The previous prime is 890575373. The next prime is 890575393. The reversal of 890575381 is 183575098.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 582256900 + 308318481 = 24130^2 + 17559^2 .

It is a cyclic number.

It is not a de Polignac number, because 890575381 - 2³ = 890575373 is a prime.

It is a super-2 number, since 2×890575381² = 1586249018486590322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (890576381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445287690 + 445287691.

It is an arithmetic number, because the mean of its divisors is an integer number (445287691).

Almost surely, 2^890575381 is an apocalyptic number.

It is an amenable number.

890575381 is a deficient number, since it is larger than the sum of its proper divisors (1).

890575381 is an equidigital number, since it uses as much as digits as its factorization.

890575381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 46.

The square root of 890575381 is about 29842.5096297212. The cubic root of 890575381 is about 962.1074149994.

The spelling of 890575381 in words is "eight hundred ninety million, five hundred seventy-five thousand, three hundred eighty-one".