3960440 has 32 divisors (see below), whose sum is σ = 9722160. Its totient is φ = 1440000.

The previous prime is 3960433. The next prime is 3960457. The reversal of 3960440 is 440693.

3960440 = 490² + 491² + ... + 505².

It is a nialpdrome in base 13.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4061 + ... + 4940.

Almost surely, 2^3960440 is an apocalyptic number.

It is an amenable number.

3960440 is an abundant number, since it is smaller than the sum of its proper divisors (5761720).

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

3960440 is a wasteful number, since it uses less digits than its factorization.

3960440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9023 (or 9019 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 3960440 is about 1990.0854253021. The cubic root of 3960440 is about 158.2150572522.

It can be divided in two parts, 3960 and 440, that multiplied together give a square (1742400 = 1320²).

The spelling of 3960440 in words is "three million, nine hundred sixty thousand, four hundred forty".