989021039 has 2 divisors, whose sum is σ = 989021040. Its totient is φ = 989021038.

The previous prime is 989020997. The next prime is 989021057. The reversal of 989021039 is 930120989.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 989021039 - 2⁸ = 989020783 is a prime.

It is a super-3 number, since 3×989021039³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 989020987 and 989021005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (989024039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494510519 + 494510520.

It is an arithmetic number, because the mean of its divisors is an integer number (494510520).

Almost surely, 2^989021039 is an apocalyptic number.

989021039 is a deficient number, since it is larger than the sum of its proper divisors (1).

989021039 is an equidigital number, since it uses as much as digits as its factorization.

989021039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 989021039 is about 31448.7048858932. The cubic root of 989021039 is about 996.3268709756.

The spelling of 989021039 in words is "nine hundred eighty-nine million, twenty-one thousand, thirty-nine".