9141839221 has 2 divisors, whose sum is σ = 9141839222. Its totient is φ = 9141839220.

The previous prime is 9141839191. The next prime is 9141839251. The reversal of 9141839221 is 1229381419.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (9141839191) and next prime (9141839251).

It can be written as a sum of positive squares in only one way, i.e., 7336779025 + 1805060196 = 85655^2 + 42486^2 .

It is a cyclic number.

It is not a de Polignac number, because 9141839221 - 2⁷ = 9141839093 is a prime.

It is a super-2 number, since 2×9141839221² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9141839251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4570919610 + 4570919611.

It is an arithmetic number, because the mean of its divisors is an integer number (4570919611).

Almost surely, 2^9141839221 is an apocalyptic number.

It is an amenable number.

9141839221 is a deficient number, since it is larger than the sum of its proper divisors (1).

9141839221 is an equidigital number, since it uses as much as digits as its factorization.

9141839221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 40.

The square root of 9141839221 is about 95612.9657577883. The cubic root of 9141839221 is about 2090.9542296007.

The spelling of 9141839221 in words is "nine billion, one hundred forty-one million, eight hundred thirty-nine thousand, two hundred twenty-one".