989951113 has 2 divisors, whose sum is σ = 989951114. Its totient is φ = 989951112.

The previous prime is 989951101. The next prime is 989951173. The reversal of 989951113 is 311159989.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 822714489 + 167236624 = 28683^2 + 12932^2 .

It is a cyclic number.

It is not a de Polignac number, because 989951113 - 2²¹ = 987853961 is a prime.

It is a super-2 number, since 2×989951113² = 1960006412259877538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (989951173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494975556 + 494975557.

It is an arithmetic number, because the mean of its divisors is an integer number (494975557).

Almost surely, 2^989951113 is an apocalyptic number.

It is an amenable number.

989951113 is a deficient number, since it is larger than the sum of its proper divisors (1).

989951113 is an equidigital number, since it uses as much as digits as its factorization.

989951113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87480, while the sum is 46.

The square root of 989951113 is about 31463.4885700871. The cubic root of 989951113 is about 996.6390879247.

The spelling of 989951113 in words is "nine hundred eighty-nine million, nine hundred fifty-one thousand, one hundred thirteen".