2005402249 has 2 divisors, whose sum is σ = 2005402250. Its totient is φ = 2005402248.

The previous prime is 2005402247. The next prime is 2005402261. The reversal of 2005402249 is 9422045002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1859765625 + 145636624 = 43125^2 + 12068^2 .

It is a cyclic number.

It is not a de Polignac number, because 2005402249 - 2¹ = 2005402247 is a prime.

Together with 2005402247, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2005402247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002701124 + 1002701125.

It is an arithmetic number, because the mean of its divisors is an integer number (1002701125).

Almost surely, 2^2005402249 is an apocalyptic number.

It is an amenable number.

2005402249 is a deficient number, since it is larger than the sum of its proper divisors (1).

2005402249 is an equidigital number, since it uses as much as digits as its factorization.

2005402249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 2005402249 is about 44781.7177986732. The cubic root of 2005402249 is about 1261.0544312439.

The spelling of 2005402249 in words is "two billion, five million, four hundred two thousand, two hundred forty-nine".