8893661879 has 2 divisors, whose sum is σ = 8893661880. Its totient is φ = 8893661878.

The previous prime is 8893661869. The next prime is 8893661891. The reversal of 8893661879 is 9781663988.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8893661879 - 2⁴ = 8893661863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8893661869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4446830939 + 4446830940.

It is an arithmetic number, because the mean of its divisors is an integer number (4446830940).

Almost surely, 2^8893661879 is an apocalyptic number.

8893661879 is a deficient number, since it is larger than the sum of its proper divisors (1).

8893661879 is an equidigital number, since it uses as much as digits as its factorization.

8893661879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31352832, while the sum is 65.

The square root of 8893661879 is about 94306.2133637015. The cubic root of 8893661879 is about 2071.8590407099.

The spelling of 8893661879 in words is "eight billion, eight hundred ninety-three million, six hundred sixty-one thousand, eight hundred seventy-nine".