3985398133 has 2 divisors, whose sum is σ = 3985398134. Its totient is φ = 3985398132.

The previous prime is 3985398119. The next prime is 3985398149. The reversal of 3985398133 is 3318935893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3944719249 + 40678884 = 62807^2 + 6378^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3985398133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3985390133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1992699066 + 1992699067.

It is an arithmetic number, because the mean of its divisors is an integer number (1992699067).

Almost surely, 2^3985398133 is an apocalyptic number.

It is an amenable number.

3985398133 is a deficient number, since it is larger than the sum of its proper divisors (1).

3985398133 is an equidigital number, since it uses as much as digits as its factorization.

3985398133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2099520, while the sum is 52.

The square root of 3985398133 is about 63130.0097655624. The cubic root of 3985398133 is about 1585.4671118747.

The spelling of 3985398133 in words is "three billion, nine hundred eighty-five million, three hundred ninety-eight thousand, one hundred thirty-three".