3928325 has 6 divisors (see below), whose sum is σ = 4871154. Its totient is φ = 3142640.

The previous prime is 3928319. The next prime is 3928361. The reversal of 3928325 is 5238293.

It is a Cunningham number, because it is equal to 1982²+1.

It can be written as a sum of positive squares in 3 ways, for example, as 1 + 3928324 = 1^2 + 1982^2 .

It is not a de Polignac number, because 3928325 - 2⁶ = 3928261 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3928291 and 3928300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 78542 + ... + 78591.

It is an arithmetic number, because the mean of its divisors is an integer number (811859).

Almost surely, 2^3928325 is an apocalyptic number.

It is an amenable number.

3928325 is a deficient number, since it is larger than the sum of its proper divisors (942829).

3928325 is a wasteful number, since it uses less digits than its factorization.

3928325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157143 (or 157138 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 3928325 is about 1982.0002522704. Note that the first 3 decimals coincide. The cubic root of 3928325 is about 157.7862435486.

Subtracting from 3928325 its sum of digits (32), we obtain a palindrome (3928293).

The spelling of 3928325 in words is "three million, nine hundred twenty-eight thousand, three hundred twenty-five".