3964621464 has 80 divisors (see below), whose sum is σ = 11122334520. Its totient is φ = 1319431680.

The previous prime is 3964621439. The next prime is 3964621489. The reversal of 3964621464 is 4641264693.

3964621464 is a `hidden beast` number, since 396 + 46 + 214 + 6 + 4 = 666.

3964621464 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3964621439) and next prime (3964621489).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 431559 + ... + 440649.

Almost surely, 2^3964621464 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 3964621464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5561167260).

3964621464 is an abundant number, since it is smaller than the sum of its proper divisors (7157713056).

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

3964621464 is a wasteful number, since it uses less digits than its factorization.

3964621464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9782 (or 9769 counting only the distinct ones).

The product of its digits is 746496, while the sum is 45.

The square root of 3964621464 is about 62965.2401250087. The cubic root of 3964621464 is about 1582.7071923861.

The spelling of 3964621464 in words is "three billion, nine hundred sixty-four million, six hundred twenty-one thousand, four hundred sixty-four".