3888889493 has 2 divisors, whose sum is σ = 3888889494. Its totient is φ = 3888889492.

The previous prime is 3888889453. The next prime is 3888889517. The reversal of 3888889493 is 3949888883.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3071043889 + 817845604 = 55417^2 + 28598^2 .

It is a cyclic number.

It is not a de Polignac number, because 3888889493 - 2²⁶ = 3821780629 is a prime.

It is a super-2 number, since 2×3888889493² = 30246922977531594098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3888889423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1944444746 + 1944444747.

It is an arithmetic number, because the mean of its divisors is an integer number (1944444747).

Almost surely, 2^3888889493 is an apocalyptic number.

It is an amenable number.

3888889493 is a deficient number, since it is larger than the sum of its proper divisors (1).

3888889493 is an equidigital number, since it uses as much as digits as its factorization.

3888889493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95551488, while the sum is 68.

The square root of 3888889493 is about 62360.9612898967. The cubic root of 3888889493 is about 1572.5647415344.

The spelling of 3888889493 in words is "three billion, eight hundred eighty-eight million, eight hundred eighty-nine thousand, four hundred ninety-three".