3988228891 has 2 divisors, whose sum is σ = 3988228892. Its totient is φ = 3988228890.

The previous prime is 3988228873. The next prime is 3988228903. The reversal of 3988228891 is 1988228893.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3988228891 - 2¹⁷ = 3988097819 is a prime.

It is not a weakly prime, because it can be changed into another prime (3988228831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1994114445 + 1994114446.

It is an arithmetic number, because the mean of its divisors is an integer number (1994114446).

Almost surely, 2^3988228891 is an apocalyptic number.

3988228891 is a deficient number, since it is larger than the sum of its proper divisors (1).

3988228891 is an equidigital number, since it uses as much as digits as its factorization.

3988228891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3981312, while the sum is 58.

The square root of 3988228891 is about 63152.4258520605. The cubic root of 3988228891 is about 1585.8423994771.

The spelling of 3988228891 in words is "three billion, nine hundred eighty-eight million, two hundred twenty-eight thousand, eight hundred ninety-one".