3925980 has 72 divisors (see below), whose sum is σ = 12619152. Its totient is φ = 984576.

The previous prime is 3925973. The next prime is 3925981. The reversal of 3925980 is 895293.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3925981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2419 + ... + 3701.

It is an arithmetic number, because the mean of its divisors is an integer number (175266).

Almost surely, 2^3925980 is an apocalyptic number.

3925980 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 3925980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6309576).

3925980 is an abundant number, since it is smaller than the sum of its proper divisors (8693172).

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

3925980 is a wasteful number, since it uses less digits than its factorization.

3925980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315 (or 1310 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 3925980 is about 1981.4085898673. The cubic root of 3925980 is about 157.7548406487.

The spelling of 3925980 in words is "three million, nine hundred twenty-five thousand, nine hundred eighty".