5209947986 has 8 divisors (see below), whose sum is σ = 7815284400. Its totient is φ = 2604853188.

The previous prime is 5209947961. The next prime is 5209948001. The reversal of 5209947986 is 6897499025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9845 + ... + 102551.

It is an arithmetic number, because the mean of its divisors is an integer number (976910550).

Almost surely, 2^5209947986 is an apocalyptic number.

5209947986 is a deficient number, since it is larger than the sum of its proper divisors (2605336414).

5209947986 is a wasteful number, since it uses less digits than its factorization.

5209947986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120808.

The product of its (nonzero) digits is 9797760, while the sum is 59.

The square root of 5209947986 is about 72179.9694236566. The cubic root of 5209947986 is about 1733.5822933902.

The spelling of 5209947986 in words is "five billion, two hundred nine million, nine hundred forty-seven thousand, nine hundred eighty-six".