5206991929 has 4 divisors (see below), whose sum is σ = 5212930084. Its totient is φ = 5201053776.

The previous prime is 5206991921. The next prime is 5206991939. The reversal of 5206991929 is 9291996025.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4297064704 + 909927225 = 65552^2 + 30165^2 .

It is a cyclic number.

It is not a de Polignac number, because 5206991929 - 2³ = 5206991921 is a prime.

It is a super-2 number, since 2×5206991929² = 54225529897342282082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5206991921) 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, 2967762 + ... + 2969515.

It is an arithmetic number, because the mean of its divisors is an integer number (1303232521).

Almost surely, 2^5206991929 is an apocalyptic number.

It is an amenable number.

5206991929 is a deficient number, since it is larger than the sum of its proper divisors (5938155).

5206991929 is an equidigital number, since it uses as much as digits as its factorization.

5206991929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5938154.

The product of its (nonzero) digits is 787320, while the sum is 52.

The square root of 5206991929 is about 72159.4895284051. The cubic root of 5206991929 is about 1733.2543606484.

The spelling of 5206991929 in words is "five billion, two hundred six million, nine hundred ninety-one thousand, nine hundred twenty-nine".