3968455 has 4 divisors (see below), whose sum is σ = 4762152. Its totient is φ = 3174760.

The previous prime is 3968453. The next prime is 3968483. The reversal of 3968455 is 5548693.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 3968455 - 2¹ = 3968453 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

3968455 is a lucky number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3968453) 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 3 ways as a sum of consecutive naturals, for example, 396841 + ... + 396850.

It is an arithmetic number, because the mean of its divisors is an integer number (1190538).

Almost surely, 2^3968455 is an apocalyptic number.

3968455 is a deficient number, since it is larger than the sum of its proper divisors (793697).

3968455 is an equidigital number, since it uses as much as digits as its factorization.

3968455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793696.

The product of its digits is 129600, while the sum is 40.

The square root of 3968455 is about 1992.0981401527. The cubic root of 3968455 is about 158.3217153679.

The spelling of 3968455 in words is "three million, nine hundred sixty-eight thousand, four hundred fifty-five".