3964363640 has 16 divisors (see below), whose sum is σ = 8919818280. Its totient is φ = 1585745440.

The previous prime is 3964363633. The next prime is 3964363649. The reversal of 3964363640 is 463634693.

It is a junction number, because it is equal to n+sod(n) for n = 3964363591 and 3964363600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3964363649) 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 3 ways as a sum of consecutive naturals, for example, 49554506 + ... + 49554585.

Almost surely, 2^3964363640 is an apocalyptic number.

It is an amenable number.

3964363640 is an abundant number, since it is smaller than the sum of its proper divisors (4955454640).

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

3964363640 is a wasteful number, since it uses less digits than its factorization.

3964363640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99109102 (or 99109098 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 44.

The square root of 3964363640 is about 62963.1927398857. The cubic root of 3964363640 is about 1582.6728832052.

The spelling of 3964363640 in words is "three billion, nine hundred sixty-four million, three hundred sixty-three thousand, six hundred forty".