3990551136 has 192 divisors, whose sum is σ = 12704864256. Its totient is φ = 1080115200.

The previous prime is 3990551093. The next prime is 3990551137. The reversal of 3990551136 is 6311550993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3990551137) 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 31 ways as a sum of consecutive naturals, for example, 420880 + ... + 430256.

It is an arithmetic number, because the mean of its divisors is an integer number (66171168).

Almost surely, 2^3990551136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3990551136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6352432128).

3990551136 is an abundant number, since it is smaller than the sum of its proper divisors (8714313120).

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

3990551136 is a wasteful number, since it uses less digits than its factorization.

3990551136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9445 (or 9437 counting only the distinct ones).

The product of its (nonzero) digits is 109350, while the sum is 42.

The square root of 3990551136 is about 63170.8092080512. The cubic root of 3990551136 is about 1586.1501384201.

The spelling of 3990551136 in words is "three billion, nine hundred ninety million, five hundred fifty-one thousand, one hundred thirty-six".