2399129933 has 2 divisors, whose sum is σ = 2399129934. Its totient is φ = 2399129932.

The previous prime is 2399129923. The next prime is 2399129969. The reversal of 2399129933 is 3399219932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2139340009 + 259789924 = 46253^2 + 16118^2 .

It is a cyclic number.

It is not a de Polignac number, because 2399129933 - 2¹⁶ = 2399064397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2399129923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1199564966 + 1199564967.

It is an arithmetic number, because the mean of its divisors is an integer number (1199564967).

Almost surely, 2^2399129933 is an apocalyptic number.

It is an amenable number.

2399129933 is a deficient number, since it is larger than the sum of its proper divisors (1).

2399129933 is an equidigital number, since it uses as much as digits as its factorization.

2399129933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 708588, while the sum is 50.

The square root of 2399129933 is about 48980.9139665646. The cubic root of 2399129933 is about 1338.7040885205.

The spelling of 2399129933 in words is "two billion, three hundred ninety-nine million, one hundred twenty-nine thousand, nine hundred thirty-three".