5209643247 has 8 divisors (see below), whose sum is σ = 7044024960. Its totient is φ = 3424178520.

The previous prime is 5209643209. The next prime is 5209643273. The reversal of 5209643247 is 7423469025.

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

It is not a de Polignac number, because 5209643247 - 2¹² = 5209639151 is a prime.

It is a super-2 number, since 2×5209643247² = 54280765522025406018, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5209643199 and 5209643208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5209643297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12228997 + ... + 12229422.

It is an arithmetic number, because the mean of its divisors is an integer number (880503120).

Almost surely, 2^5209643247 is an apocalyptic number.

5209643247 is a deficient number, since it is larger than the sum of its proper divisors (1834381713).

5209643247 is a wasteful number, since it uses less digits than its factorization.

5209643247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24458493.

The product of its (nonzero) digits is 362880, while the sum is 42.

The square root of 5209643247 is about 72177.8584262515. The cubic root of 5209643247 is about 1733.5484926410.

The spelling of 5209643247 in words is "five billion, two hundred nine million, six hundred forty-three thousand, two hundred forty-seven".