3955219 has 4 divisors (see below), whose sum is σ = 3961440. Its totient is φ = 3949000.

The previous prime is 3955187. The next prime is 3955243. The reversal of 3955219 is 9125593.

It is a happy number.

3955219 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9125593 = 53 ⋅172181.

It is a cyclic number.

It is not a de Polignac number, because 3955219 - 2⁵ = 3955187 is a prime.

It is a super-2 number, since 2×3955219² = 31287514675922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3955279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2032 + ... + 3469.

It is an arithmetic number, because the mean of its divisors is an integer number (990360).

Almost surely, 2^3955219 is an apocalyptic number.

3955219 is a deficient number, since it is larger than the sum of its proper divisors (6221).

3955219 is an equidigital number, since it uses as much as digits as its factorization.

3955219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6220.

The product of its digits is 12150, while the sum is 34.

The square root of 3955219 is about 1988.7732399648. The cubic root of 3955219 is about 158.1455023487.

The spelling of 3955219 in words is "three million, nine hundred fifty-five thousand, two hundred nineteen".