2599120949 has 2 divisors, whose sum is σ = 2599120950. Its totient is φ = 2599120948.

The previous prime is 2599120943. The next prime is 2599121047. The reversal of 2599120949 is 9490219952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2303040100 + 296080849 = 47990^2 + 17207^2 .

It is a cyclic number.

It is not a de Polignac number, because 2599120949 - 2¹⁶ = 2599055413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2599120897 and 2599120906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2599120943) 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, 1299560474 + 1299560475.

It is an arithmetic number, because the mean of its divisors is an integer number (1299560475).

Almost surely, 2^2599120949 is an apocalyptic number.

It is an amenable number.

2599120949 is a deficient number, since it is larger than the sum of its proper divisors (1).

2599120949 is an equidigital number, since it uses as much as digits as its factorization.

2599120949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 524880, while the sum is 50.

The square root of 2599120949 is about 50981.5746029877. The cubic root of 2599120949 is about 1374.9138809314.

The spelling of 2599120949 in words is "two billion, five hundred ninety-nine million, one hundred twenty thousand, nine hundred forty-nine".