879061881889 has 9 divisors (see below), whose sum is σ = 887947292019. Its totient is φ = 870264540600.

The previous prime is 879061881881. The next prime is 879061881937. The reversal of 879061881889 is 988188160978.

The square root of 879061881889 is 937583.

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., 844592246289 + 34469635600 = 919017^2 + 185660^2 .

It is not a de Polignac number, because 879061881889 - 2³ = 879061881881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (879061881881) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 94691242 + ... + 94700524.

Almost surely, 2^879061881889 is an apocalyptic number.

879061881889 is the 937583-rd square number.

879061881889 is the 468792-nd centered octagonal number.

It is an amenable number.

879061881889 is a deficient number, since it is larger than the sum of its proper divisors (8885410130).

879061881889 is an frugal number, since it uses more digits than its factorization.

879061881889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18768 (or 9384 counting only the distinct ones).

The product of its (nonzero) digits is 111476736, while the sum is 73.

The spelling of 879061881889 in words is "eight hundred seventy-nine billion, sixty-one million, eight hundred eighty-one thousand, eight hundred eighty-nine".