3960425 has 36 divisors (see below), whose sum is σ = 5915916. Its totient is φ = 2620800.

The previous prime is 3960421. The next prime is 3960427. The reversal of 3960425 is 5240693.

It can be written as a sum of positive squares in 6 ways, for example, as 414736 + 3545689 = 644^2 + 1883^2 .

It is not a de Polignac number, because 3960425 - 2² = 3960421 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (3960421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 64895 + ... + 64955.

It is an arithmetic number, because the mean of its divisors is an integer number (164331).

Almost surely, 2^3960425 is an apocalyptic number.

3960425 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3960425 is a deficient number, since it is larger than the sum of its proper divisors (1955491).

3960425 is a wasteful number, since it uses less digits than its factorization.

3960425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 3960425 is about 1990.0816566161. The cubic root of 3960425 is about 158.2148575077.

The spelling of 3960425 in words is "three million, nine hundred sixty thousand, four hundred twenty-five".