3985531967 has 2 divisors, whose sum is σ = 3985531968. Its totient is φ = 3985531966.

The previous prime is 3985531939. The next prime is 3985531999. The reversal of 3985531967 is 7691355893.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3985531967 - 2¹⁰ = 3985530943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3985531937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1992765983 + 1992765984.

It is an arithmetic number, because the mean of its divisors is an integer number (1992765984).

Almost surely, 2^3985531967 is an apocalyptic number.

3985531967 is a deficient number, since it is larger than the sum of its proper divisors (1).

3985531967 is an equidigital number, since it uses as much as digits as its factorization.

3985531967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6123600, while the sum is 56.

The square root of 3985531967 is about 63131.0697438274. The cubic root of 3985531967 is about 1585.4848589122.

The spelling of 3985531967 in words is "three billion, nine hundred eighty-five million, five hundred thirty-one thousand, nine hundred sixty-seven".