3990566398 has 32 divisors (see below), whose sum is σ = 7380999360. Its totient is φ = 1575728640.

The previous prime is 3990566387. The next prime is 3990566399. The reversal of 3990566398 is 8936650993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3990566399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78198 + ... + 118726.

It is an arithmetic number, because the mean of its divisors is an integer number (230656230).

Almost surely, 2^3990566398 is an apocalyptic number.

3990566398 is a deficient number, since it is larger than the sum of its proper divisors (3390432962).

3990566398 is a wasteful number, since it uses less digits than its factorization.

3990566398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41092.

The product of its (nonzero) digits is 9447840, while the sum is 58.

The square root of 3990566398 is about 63170.9300074013. The cubic root of 3990566398 is about 1586.1521605127.

The spelling of 3990566398 in words is "three billion, nine hundred ninety million, five hundred sixty-six thousand, three hundred ninety-eight".