3925964820 has 96 divisors (see below), whose sum is σ = 11248771968. Its totient is φ = 1022810112.

The previous prime is 3925964759. The next prime is 3925964821. The reversal of 3925964820 is 284695293.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 3925964820.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3925964821) 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, 464472 + ... + 472848.

It is an arithmetic number, because the mean of its divisors is an integer number (117174708).

Almost surely, 2^3925964820 is an apocalyptic number.

3925964820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3925964820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5624385984).

3925964820 is an abundant number, since it is smaller than the sum of its proper divisors (7322807148).

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

3925964820 is a wasteful number, since it uses less digits than its factorization.

3925964820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8569 (or 8567 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 48.

The square root of 3925964820 is about 62657.5200594470. The cubic root of 3925964820 is about 1577.5463732608.

The spelling of 3925964820 in words is "three billion, nine hundred twenty-five million, nine hundred sixty-four thousand, eight hundred twenty".