989001021139 has 2 divisors, whose sum is σ = 989001021140. Its totient is φ = 989001021138.

The previous prime is 989001021049. The next prime is 989001021143. The reversal of 989001021139 is 931120100989.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 989001021139 - 2³¹ = 986853537491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 989001021095 and 989001021104.

It is not a weakly prime, because it can be changed into another prime (989001021179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494500510569 + 494500510570.

It is an arithmetic number, because the mean of its divisors is an integer number (494500510570).

Almost surely, 2^989001021139 is an apocalyptic number.

989001021139 is a deficient number, since it is larger than the sum of its proper divisors (1).

989001021139 is an equidigital number, since it uses as much as digits as its factorization.

989001021139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 43.

The spelling of 989001021139 in words is "nine hundred eighty-nine billion, one million, twenty-one thousand, one hundred thirty-nine".