890841269 has 2 divisors, whose sum is σ = 890841270. Its totient is φ = 890841268.

The previous prime is 890841257. The next prime is 890841283. The reversal of 890841269 is 962148098.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 858783025 + 32058244 = 29305^2 + 5662^2 .

It is a cyclic number.

It is not a de Polignac number, because 890841269 - 2⁴ = 890841253 is a prime.

It is a super-2 number, since 2×890841269² = 1587196333107060722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (890841229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445420634 + 445420635.

It is an arithmetic number, because the mean of its divisors is an integer number (445420635).

Almost surely, 2^890841269 is an apocalyptic number.

It is an amenable number.

890841269 is a deficient number, since it is larger than the sum of its proper divisors (1).

890841269 is an equidigital number, since it uses as much as digits as its factorization.

890841269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 47.

The square root of 890841269 is about 29846.9641504794. The cubic root of 890841269 is about 962.2031536151.

The spelling of 890841269 in words is "eight hundred ninety million, eight hundred forty-one thousand, two hundred sixty-nine".