9675478639 has 4 divisors (see below), whose sum is σ = 9721334200. Its totient is φ = 9629623080.

The previous prime is 9675478621. The next prime is 9675478649. The reversal of 9675478639 is 9368745769.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9368745769 = 8521 ⋅1099489.

It is a cyclic number.

It is not a de Polignac number, because 9675478639 - 2⁵ = 9675478607 is a prime.

It is a super-2 number, since 2×9675478639² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9675478649) 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, 22927464 + ... + 22927885.

It is an arithmetic number, because the mean of its divisors is an integer number (2430333550).

Almost surely, 2^9675478639 is an apocalyptic number.

9675478639 is a deficient number, since it is larger than the sum of its proper divisors (45855561).

9675478639 is a wasteful number, since it uses less digits than its factorization.

9675478639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45855560.

The product of its digits is 68584320, while the sum is 64.

The square root of 9675478639 is about 98364.0108932124. The cubic root of 9675478639 is about 2130.8726055773.

The spelling of 9675478639 in words is "nine billion, six hundred seventy-five million, four hundred seventy-eight thousand, six hundred thirty-nine".