3956555 has 4 divisors (see below), whose sum is σ = 4747872. Its totient is φ = 3165240.

The previous prime is 3956549. The next prime is 3956569. The reversal of 3956555 is 5556593.

It is a happy number.

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

It is not a de Polignac number, because 3956555 - 2¹⁴ = 3940171 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 395651 + ... + 395660.

It is an arithmetic number, because the mean of its divisors is an integer number (1186968).

Almost surely, 2^3956555 is an apocalyptic number.

3956555 is a deficient number, since it is larger than the sum of its proper divisors (791317).

3956555 is an equidigital number, since it uses as much as digits as its factorization.

3956555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791316.

The product of its digits is 101250, while the sum is 38.

The square root of 3956555 is about 1989.1090970583. The cubic root of 3956555 is about 158.1633065551.

Adding to 3956555 its sum of digits (38), we get a palindrome (3956593).

The spelling of 3956555 in words is "three million, nine hundred fifty-six thousand, five hundred fifty-five".