9638225439 has 4 divisors (see below), whose sum is σ = 12850967256. Its totient is φ = 6425483624.

The previous prime is 9638225413. The next prime is 9638225449. The reversal of 9638225439 is 9345228369.

It is a happy number.

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 9638225439 - 2¹² = 9638221343 is a prime.

It is a super-2 number, since 2×9638225439² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9638225391 and 9638225400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9638225449) 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, 1606370904 + ... + 1606370909.

It is an arithmetic number, because the mean of its divisors is an integer number (3212741814).

Almost surely, 2^9638225439 is an apocalyptic number.

9638225439 is a deficient number, since it is larger than the sum of its proper divisors (3212741817).

9638225439 is a wasteful number, since it uses less digits than its factorization.

9638225439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3212741816.

The product of its digits is 2799360, while the sum is 51.

The square root of 9638225439 is about 98174.4642918921. The cubic root of 9638225439 is about 2128.1342768850.

The spelling of 9638225439 in words is "nine billion, six hundred thirty-eight million, two hundred twenty-five thousand, four hundred thirty-nine".