5208894991 has 4 divisors (see below), whose sum is σ = 5319722592. Its totient is φ = 5098067392.

The previous prime is 5208894989. The next prime is 5208895007. The reversal of 5208894991 is 1994988025.

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 5208894991 - 2¹ = 5208894989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5208894091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55413730 + ... + 55413823.

It is an arithmetic number, because the mean of its divisors is an integer number (1329930648).

Almost surely, 2^5208894991 is an apocalyptic number.

5208894991 is a deficient number, since it is larger than the sum of its proper divisors (110827601).

5208894991 is a wasteful number, since it uses less digits than its factorization.

5208894991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110827600.

The product of its (nonzero) digits is 1866240, while the sum is 55.

The square root of 5208894991 is about 72172.6748222622. The cubic root of 5208894991 is about 1733.4654927050.

The spelling of 5208894991 in words is "five billion, two hundred eight million, eight hundred ninety-four thousand, nine hundred ninety-one".