3990437976 has 128 divisors (see below), whose sum is σ = 11630684160. Its totient is φ = 1117324800.

The previous prime is 3990437963. The next prime is 3990437977. The reversal of 3990437976 is 6797340993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3990437977) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3760486 + ... + 3761546.

It is an arithmetic number, because the mean of its divisors is an integer number (90864720).

Almost surely, 2^3990437976 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 3990437976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5815342080).

3990437976 is an abundant number, since it is smaller than the sum of its proper divisors (7640246184).

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

3990437976 is a wasteful number, since it uses less digits than its factorization.

3990437976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505 (or 1501 counting only the distinct ones).

The product of its (nonzero) digits is 7715736, while the sum is 57.

The square root of 3990437976 is about 63169.9135348466. The cubic root of 3990437976 is about 1586.1351454663.

The spelling of 3990437976 in words is "three billion, nine hundred ninety million, four hundred thirty-seven thousand, nine hundred seventy-six".