4247438529 has 4 divisors (see below), whose sum is σ = 5663251376. Its totient is φ = 2831625684.

The previous prime is 4247438521. The next prime is 4247438549. The reversal of 4247438529 is 9258347424.

4247438529 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4247438529 - 2³ = 4247438521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4247438521) 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, 707906419 + ... + 707906424.

It is an arithmetic number, because the mean of its divisors is an integer number (1415812844).

Almost surely, 2^4247438529 is an apocalyptic number.

It is an amenable number.

4247438529 is a deficient number, since it is larger than the sum of its proper divisors (1415812847).

4247438529 is a wasteful number, since it uses less digits than its factorization.

4247438529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1415812846.

The product of its digits is 1935360, while the sum is 48.

The square root of 4247438529 is about 65172.3755052706. The cubic root of 4247438529 is about 1619.4804167431.

It can be divided in two parts, 42474 and 38529, that added together give a triangular number (81003 = T₄₀₂).

The spelling of 4247438529 in words is "four billion, two hundred forty-seven million, four hundred thirty-eight thousand, five hundred twenty-nine".