4247474521 has 8 divisors (see below), whose sum is σ = 4270952000. Its totient is φ = 4224029040.

The previous prime is 4247474519. The next prime is 4247474549. The reversal of 4247474521 is 1254747424.

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

It is a cyclic number.

It is not a de Polignac number, because 4247474521 - 2¹ = 4247474519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4247474321) 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, 287995 + ... + 302383.

It is an arithmetic number, because the mean of its divisors is an integer number (533869000).

Almost surely, 2^4247474521 is an apocalyptic number.

It is an amenable number.

4247474521 is a deficient number, since it is larger than the sum of its proper divisors (23477479).

4247474521 is a wasteful number, since it uses less digits than its factorization.

4247474521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15999.

The product of its digits is 250880, while the sum is 40.

The square root of 4247474521 is about 65172.6516339484. The cubic root of 4247474521 is about 1619.4849911216.

The spelling of 4247474521 in words is "four billion, two hundred forty-seven million, four hundred seventy-four thousand, five hundred twenty-one".