3999550553 has 2 divisors, whose sum is σ = 3999550554. Its totient is φ = 3999550552.

The previous prime is 3999550531. The next prime is 3999550561. The reversal of 3999550553 is 3550559993.

3999550553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2942845504 + 1056705049 = 54248^2 + 32507^2 .

It is a cyclic number.

It is not a de Polignac number, because 3999550553 - 2⁸ = 3999550297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3999550495 and 3999550504.

It is not a weakly prime, because it can be changed into another prime (3999550153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1999775276 + 1999775277.

It is an arithmetic number, because the mean of its divisors is an integer number (1999775277).

Almost surely, 2^3999550553 is an apocalyptic number.

It is an amenable number.

3999550553 is a deficient number, since it is larger than the sum of its proper divisors (1).

3999550553 is an equidigital number, since it uses as much as digits as its factorization.

3999550553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4100625, while the sum is 53.

The square root of 3999550553 is about 63241.9999130325. Note that the first 4 decimals coincide. The cubic root of 3999550553 is about 1587.3415953545.

The spelling of 3999550553 in words is "three billion, nine hundred ninety-nine million, five hundred fifty thousand, five hundred fifty-three".