3925540 has 12 divisors (see below), whose sum is σ = 8243676. Its totient is φ = 1570208.

The previous prime is 3925489. The next prime is 3925541. The reversal of 3925540 is 455293.

It can be written as a sum of positive squares in 2 ways, for example, as 2427364 + 1498176 = 1558^2 + 1224^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3925499 and 3925508.

It is not an unprimeable number, because it can be changed into a prime (3925541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98119 + ... + 98158.

It is an arithmetic number, because the mean of its divisors is an integer number (686973).

Almost surely, 2^3925540 is an apocalyptic number.

It is an amenable number.

3925540 is an abundant number, since it is smaller than the sum of its proper divisors (4318136).

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

3925540 is a wasteful number, since it uses less digits than its factorization.

3925540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196286 (or 196284 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 3925540 is about 1981.2975546343. The cubic root of 3925540 is about 157.7489470270.

It can be divided in two parts, 3925 and 540, that added together give a triangular number (4465 = T₉₄).

The spelling of 3925540 in words is "three million, nine hundred twenty-five thousand, five hundred forty".