9528449439 has 4 divisors (see below), whose sum is σ = 12704599256. Its totient is φ = 6352299624.

The previous prime is 9528449431. The next prime is 9528449443. The reversal of 9528449439 is 9349448259.

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

It is not a de Polignac number, because 9528449439 - 2³ = 9528449431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9528449431) 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, 1588074904 + ... + 1588074909.

It is an arithmetic number, because the mean of its divisors is an integer number (3176149814).

Almost surely, 2^9528449439 is an apocalyptic number.

9528449439 is a deficient number, since it is larger than the sum of its proper divisors (3176149817).

9528449439 is a wasteful number, since it uses less digits than its factorization.

9528449439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3176149816.

The product of its digits is 11197440, while the sum is 57.

The square root of 9528449439 is about 97613.7768913794. The cubic root of 9528449439 is about 2120.0238396957.

The spelling of 9528449439 in words is "nine billion, five hundred twenty-eight million, four hundred forty-nine thousand, four hundred thirty-nine".