3955215 has 16 divisors (see below), whose sum is σ = 6903936. Its totient is φ = 1917600.

The previous prime is 3955187. The next prime is 3955243. The reversal of 3955215 is 5125593.

It is an interprime number because it is at equal distance from previous prime (3955187) and next prime (3955243).

It is not a de Polignac number, because 3955215 - 2⁶ = 3955151 is a prime.

3955215 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11821 + ... + 12150.

It is an arithmetic number, because the mean of its divisors is an integer number (431496).

Almost surely, 2^3955215 is an apocalyptic number.

3955215 is a deficient number, since it is larger than the sum of its proper divisors (2948721).

3955215 is a wasteful number, since it uses less digits than its factorization.

3955215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23990.

The product of its digits is 6750, while the sum is 30.

The square root of 3955215 is about 1988.7722343195. The cubic root of 3955215 is about 158.1454490367.

The spelling of 3955215 in words is "three million, nine hundred fifty-five thousand, two hundred fifteen".