889901109931 has 2 divisors, whose sum is σ = 889901109932. Its totient is φ = 889901109930.

The previous prime is 889901109919. The next prime is 889901109991. The reversal of 889901109931 is 139901109988.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 889901109931 - 2³¹ = 887753626283 is a prime.

It is a super-2 number, since 2×889901109931² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (889901109991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444950554965 + 444950554966.

It is an arithmetic number, because the mean of its divisors is an integer number (444950554966).

Almost surely, 2^889901109931 is an apocalyptic number.

889901109931 is a deficient number, since it is larger than the sum of its proper divisors (1).

889901109931 is an equidigital number, since it uses as much as digits as its factorization.

889901109931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1259712, while the sum is 58.

The spelling of 889901109931 in words is "eight hundred eighty-nine billion, nine hundred one million, one hundred nine thousand, nine hundred thirty-one".