9715452639 has 4 divisors (see below), whose sum is σ = 12953936856. Its totient is φ = 6476968424.

The previous prime is 9715452623. The next prime is 9715452679. The reversal of 9715452639 is 9362545179.

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

It is a cyclic number.

It is not a de Polignac number, because 9715452639 - 2⁴ = 9715452623 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9715452591 and 9715452600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9715452679) 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, 1619242104 + ... + 1619242109.

It is an arithmetic number, because the mean of its divisors is an integer number (3238484214).

Almost surely, 2^9715452639 is an apocalyptic number.

9715452639 is a deficient number, since it is larger than the sum of its proper divisors (3238484217).

9715452639 is a wasteful number, since it uses less digits than its factorization.

9715452639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3238484216.

The product of its digits is 2041200, while the sum is 51.

The square root of 9715452639 is about 98566.9956882120. The cubic root of 9715452639 is about 2133.8031225936.

The spelling of 9715452639 in words is "nine billion, seven hundred fifteen million, four hundred fifty-two thousand, six hundred thirty-nine".