5209981699 has 4 divisors (see below), whose sum is σ = 5610749536. Its totient is φ = 4809213864.

The previous prime is 5209981691. The next prime is 5209981703. The reversal of 5209981699 is 9961899025.

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

It is not a de Polignac number, because 5209981699 - 2³ = 5209981691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5209981691) 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, 200383899 + ... + 200383924.

It is an arithmetic number, because the mean of its divisors is an integer number (1402687384).

Almost surely, 2^5209981699 is an apocalyptic number.

5209981699 is a deficient number, since it is larger than the sum of its proper divisors (400767837).

5209981699 is a wasteful number, since it uses less digits than its factorization.

5209981699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400767836.

The product of its (nonzero) digits is 3149280, while the sum is 58.

The square root of 5209981699 is about 72180.2029575977. The cubic root of 5209981699 is about 1733.5860326555.

The spelling of 5209981699 in words is "five billion, two hundred nine million, nine hundred eighty-one thousand, six hundred ninety-nine".