3940490664 has 96 divisors (see below), whose sum is σ = 11773382400. Its totient is φ = 1180650240.

The previous prime is 3940490633. The next prime is 3940490747. The reversal of 3940490664 is 4660940493.

It is a happy number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 42537 + ... + 98439.

It is an arithmetic number, because the mean of its divisors is an integer number (122639400).

Almost surely, 2^3940490664 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 3940490664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5886691200).

3940490664 is an abundant number, since it is smaller than the sum of its proper divisors (7832891736).

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

3940490664 is a wasteful number, since it uses less digits than its factorization.

3940490664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56015 (or 56008 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The square root of 3940490664 is about 62773.3276479748. The cubic root of 3940490664 is about 1579.4895889108.

The spelling of 3940490664 in words is "three billion, nine hundred forty million, four hundred ninety thousand, six hundred sixty-four".