8440238061 has 6 divisors (see below), whose sum is σ = 12191454990. Its totient is φ = 5626825368.

The previous prime is 8440238041. The next prime is 8440238117. The reversal of 8440238061 is 1608320448.

It can be written as a sum of positive squares in only one way, i.e., 8439913161 + 324900 = 91869^2 + 570^2 .

It is not a de Polignac number, because 8440238061 - 2⁶ = 8440237997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8440238021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 468902106 + ... + 468902123.

It is an arithmetic number, because the mean of its divisors is an integer number (2031909165).

Almost surely, 2^8440238061 is an apocalyptic number.

It is an amenable number.

8440238061 is a deficient number, since it is larger than the sum of its proper divisors (3751216929).

8440238061 is a wasteful number, since it uses less digits than its factorization.

8440238061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937804235 (or 937804232 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 8440238061 is about 91870.7682617273. The cubic root of 8440238061 is about 2036.0334031784.

The spelling of 8440238061 in words is "eight billion, four hundred forty million, two hundred thirty-eight thousand, sixty-one".