887049399889 has 27 divisors (see below), whose sum is σ = 940014957531. Its totient is φ = 837025823760.

The previous prime is 887049399883. The next prime is 887049399911. The reversal of 887049399889 is 988993940788.

The square root of 887049399889 is 941833.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 465147188289 + 421902211600 = 682017^2 + 649540^2 .

It is not a de Polignac number, because 887049399889 - 2⁹ = 887049399377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (887049399883) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1283718034 + ... + 1283718724.

Almost surely, 2^887049399889 is an apocalyptic number.

887049399889 is the 941833-rd square number.

887049399889 is the 470917-th centered octagonal number.

It is an amenable number.

887049399889 is a deficient number, since it is larger than the sum of its proper divisors (52965557642).

887049399889 is an frugal number, since it uses more digits than its factorization.

887049399889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534 (or 767 counting only the distinct ones).

The product of its (nonzero) digits is 2257403904, while the sum is 82.

The spelling of 887049399889 in words is "eight hundred eighty-seven billion, forty-nine million, three hundred ninety-nine thousand, eight hundred eighty-nine".