9439846381 has 8 divisors (see below), whose sum is σ = 10814776640. Its totient is φ = 8071511328.

The previous prime is 9439846379. The next prime is 9439846397. The reversal of 9439846381 is 1836489349.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9439846381 - 2¹ = 9439846379 is a prime.

It is a super-2 number, since 2×9439846381² (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 (9439846781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1645731 + ... + 1651456.

It is an arithmetic number, because the mean of its divisors is an integer number (1351847080).

Almost surely, 2^9439846381 is an apocalyptic number.

It is an amenable number.

9439846381 is a deficient number, since it is larger than the sum of its proper divisors (1374930259).

9439846381 is a wasteful number, since it uses less digits than its factorization.

9439846381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3297603.

The product of its digits is 4478976, while the sum is 55.

The square root of 9439846381 is about 97158.8718594447. The cubic root of 9439846381 is about 2113.4321462923.

The spelling of 9439846381 in words is "nine billion, four hundred thirty-nine million, eight hundred forty-six thousand, three hundred eighty-one".