3998006827 has 4 divisors (see below), whose sum is σ = 3998331016. Its totient is φ = 3997682640.

The previous prime is 3998006777. The next prime is 3998006833. The reversal of 3998006827 is 7286008993.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7286008993 = 751 ⋅9701743.

It is a cyclic number.

It is not a de Polignac number, because 3998006827 - 2¹¹ = 3998004779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3998006867) 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 in 3 ways as a sum of consecutive naturals, for example, 142833 + ... + 168514.

It is an arithmetic number, because the mean of its divisors is an integer number (999582754).

Almost surely, 2^3998006827 is an apocalyptic number.

3998006827 is a deficient number, since it is larger than the sum of its proper divisors (324189).

3998006827 is a wasteful number, since it uses less digits than its factorization.

3998006827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324188.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The square root of 3998006827 is about 63229.7938237980. The cubic root of 3998006827 is about 1587.1373444190.

The spelling of 3998006827 in words is "three billion, nine hundred ninety-eight million, six thousand, eight hundred twenty-seven".