3998368506 has 32 divisors (see below), whose sum is σ = 8725994496. Its totient is φ = 1211310000.

The previous prime is 3998368501. The next prime is 3998368513. The reversal of 3998368506 is 6058638993.

It is not an unprimeable number, because it can be changed into a prime (3998368501) 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 15 ways as a sum of consecutive naturals, for example, 421071 + ... + 430461.

It is an arithmetic number, because the mean of its divisors is an integer number (272687328).

Almost surely, 2^3998368506 is an apocalyptic number.

3998368506 is an abundant number, since it is smaller than the sum of its proper divisors (4727625990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3998368506 is a wasteful number, since it uses less digits than its factorization.

3998368506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15858.

The product of its (nonzero) digits is 8398080, while the sum is 57.

The square root of 3998368506 is about 63232.6537953295. The cubic root of 3998368506 is about 1587.1852030115.

The spelling of 3998368506 in words is "three billion, nine hundred ninety-eight million, three hundred sixty-eight thousand, five hundred six".