890081149 has 2 divisors, whose sum is σ = 890081150. Its totient is φ = 890081148.

The previous prime is 890081119. The next prime is 890081161. The reversal of 890081149 is 941180098.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 855153049 + 34928100 = 29243^2 + 5910^2 .

It is a cyclic number.

It is not a de Polignac number, because 890081149 - 2¹¹ = 890079101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (890081119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445040574 + 445040575.

It is an arithmetic number, because the mean of its divisors is an integer number (445040575).

Almost surely, 2^890081149 is an apocalyptic number.

It is an amenable number.

890081149 is a deficient number, since it is larger than the sum of its proper divisors (1).

890081149 is an equidigital number, since it uses as much as digits as its factorization.

890081149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 890081149 is about 29834.2278096820. The cubic root of 890081149 is about 961.9294056395.

The spelling of 890081149 in words is "eight hundred ninety million, eighty-one thousand, one hundred forty-nine".