887149889 has 2 divisors, whose sum is σ = 887149890. Its totient is φ = 887149888.

The previous prime is 887149807. The next prime is 887149927. The reversal of 887149889 is 988941788.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 653671489 + 233478400 = 25567^2 + 15280^2 .

It is a cyclic number.

It is not a de Polignac number, because 887149889 - 2²⁴ = 870372673 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (887149489) 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, 443574944 + 443574945.

It is an arithmetic number, because the mean of its divisors is an integer number (443574945).

Almost surely, 2^887149889 is an apocalyptic number.

It is an amenable number.

887149889 is a deficient number, since it is larger than the sum of its proper divisors (1).

887149889 is an equidigital number, since it uses as much as digits as its factorization.

887149889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9289728, while the sum is 62.

The square root of 887149889 is about 29785.0615074067. The cubic root of 887149889 is about 960.8722862386.

The spelling of 887149889 in words is "eight hundred eighty-seven million, one hundred forty-nine thousand, eight hundred eighty-nine".