2599449901 has 2 divisors, whose sum is σ = 2599449902. Its totient is φ = 2599449900.

The previous prime is 2599449871. The next prime is 2599449943. The reversal of 2599449901 is 1099449952.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2543184900 + 56265001 = 50430^2 + 7501^2 .

It is a cyclic number.

It is not a de Polignac number, because 2599449901 - 2⁹ = 2599449389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2599443901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1299724950 + 1299724951.

It is an arithmetic number, because the mean of its divisors is an integer number (1299724951).

Almost surely, 2^2599449901 is an apocalyptic number.

It is an amenable number.

2599449901 is a deficient number, since it is larger than the sum of its proper divisors (1).

2599449901 is an equidigital number, since it uses as much as digits as its factorization.

2599449901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1049760, while the sum is 52.

The square root of 2599449901 is about 50984.8006860868. The cubic root of 2599449901 is about 1374.9718827969.

The spelling of 2599449901 in words is "two billion, five hundred ninety-nine million, four hundred forty-nine thousand, nine hundred one".