4086238661 has 2 divisors, whose sum is σ = 4086238662. Its totient is φ = 4086238660.

The previous prime is 4086238571. The next prime is 4086238669. The reversal of 4086238661 is 1668326804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2908444900 + 1177793761 = 53930^2 + 34319^2 .

It is a cyclic number.

It is not a de Polignac number, because 4086238661 - 2²² = 4082044357 is a prime.

It is a super-3 number, since 3×4086238661³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4086238669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2043119330 + 2043119331.

It is an arithmetic number, because the mean of its divisors is an integer number (2043119331).

Almost surely, 2^4086238661 is an apocalyptic number.

It is an amenable number.

4086238661 is a deficient number, since it is larger than the sum of its proper divisors (1).

4086238661 is an equidigital number, since it uses as much as digits as its factorization.

4086238661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 44.

The square root of 4086238661 is about 63923.6940500156. The cubic root of 4086238661 is about 1598.7279813160.

The spelling of 4086238661 in words is "four billion, eighty-six million, two hundred thirty-eight thousand, six hundred sixty-one".