2004299981 has 2 divisors, whose sum is σ = 2004299982. Its totient is φ = 2004299980.

The previous prime is 2004299963. The next prime is 2004300013. The reversal of 2004299981 is 1899924002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1981585225 + 22714756 = 44515^2 + 4766^2 .

It is a cyclic number.

It is not a de Polignac number, because 2004299981 - 2¹⁴ = 2004283597 is a prime.

It is a super-2 number, since 2×2004299981² = 8034436827673200722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2004299951) 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, 1002149990 + 1002149991.

It is an arithmetic number, because the mean of its divisors is an integer number (1002149991).

Almost surely, 2^2004299981 is an apocalyptic number.

It is an amenable number.

2004299981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2004299981 is an equidigital number, since it uses as much as digits as its factorization.

2004299981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 2004299981 is about 44769.4089864943. The cubic root of 2004299981 is about 1260.8233429923.

The spelling of 2004299981 in words is "two billion, four million, two hundred ninety-nine thousand, nine hundred eighty-one".