5206911999 has 4 divisors (see below), whose sum is σ = 6942549336. Its totient is φ = 3471274664.

The previous prime is 5206911991. The next prime is 5206912043. The reversal of 5206911999 is 9991196025.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5206911999 - 2³ = 5206911991 is a prime.

It is a super-2 number, since 2×5206911999² = 54223865130660352002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5206911991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 867818664 + ... + 867818669.

It is an arithmetic number, because the mean of its divisors is an integer number (1735637334).

Almost surely, 2^5206911999 is an apocalyptic number.

5206911999 is a deficient number, since it is larger than the sum of its proper divisors (1735637337).

5206911999 is a wasteful number, since it uses less digits than its factorization.

5206911999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1735637336.

The product of its (nonzero) digits is 393660, while the sum is 51.

The square root of 5206911999 is about 72158.9356836698. The cubic root of 5206911999 is about 1733.2454918215.

The spelling of 5206911999 in words is "five billion, two hundred six million, nine hundred eleven thousand, nine hundred ninety-nine".