881788969 has 2 divisors, whose sum is σ = 881788970. Its totient is φ = 881788968.

The previous prime is 881788939. The next prime is 881789063. The reversal of 881788969 is 969887188.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 795522025 + 86266944 = 28205^2 + 9288^2 .

It is a cyclic number.

It is not a de Polignac number, because 881788969 - 2⁵ = 881788937 is a prime.

It is a super-2 number, since 2×881788969² = 1555103571700165922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 881788969.

It is not a weakly prime, because it can be changed into another prime (881788909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 440894484 + 440894485.

It is an arithmetic number, because the mean of its divisors is an integer number (440894485).

Almost surely, 2^881788969 is an apocalyptic number.

It is an amenable number.

881788969 is a deficient number, since it is larger than the sum of its proper divisors (1).

881788969 is an equidigital number, since it uses as much as digits as its factorization.

881788969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13934592, while the sum is 64.

The square root of 881788969 is about 29694.9317055958. The cubic root of 881788969 is about 958.9329032016.

The spelling of 881788969 in words is "eight hundred eighty-one million, seven hundred eighty-eight thousand, nine hundred sixty-nine".