3984361765 has 8 divisors (see below), whose sum is σ = 4946104440. Its totient is φ = 3077575872.

The previous prime is 3984361763. The next prime is 3984361781. The reversal of 3984361765 is 5671634893.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1453668129 + 2530693636 = 38127^2 + 50306^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3984361765 - 2¹ = 3984361763 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3984361763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13739034 + ... + 13739323.

It is an arithmetic number, because the mean of its divisors is an integer number (618263055).

Almost surely, 2^3984361765 is an apocalyptic number.

It is an amenable number.

3984361765 is a deficient number, since it is larger than the sum of its proper divisors (961742675).

3984361765 is a wasteful number, since it uses less digits than its factorization.

3984361765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27478391.

The product of its digits is 3265920, while the sum is 52.

The square root of 3984361765 is about 63121.8010278541. The cubic root of 3984361765 is about 1585.3296709990.

The spelling of 3984361765 in words is "three billion, nine hundred eighty-four million, three hundred sixty-one thousand, seven hundred sixty-five".