3942855 has 24 divisors (see below), whose sum is σ = 7811232. Its totient is φ = 1802304.

The previous prime is 3942839. The next prime is 3942871. The reversal of 3942855 is 5582493.

It is an interprime number because it is at equal distance from previous prime (3942839) and next prime (3942871).

It is not a de Polignac number, because 3942855 - 2⁴ = 3942839 is a prime.

It is a super-2 number, since 2×3942855² = 31092211102050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5944 + ... + 6573.

It is an arithmetic number, because the mean of its divisors is an integer number (325468).

Almost surely, 2^3942855 is an apocalyptic number.

3942855 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3942855 is a deficient number, since it is larger than the sum of its proper divisors (3868377).

3942855 is a wasteful number, since it uses less digits than its factorization.

3942855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12535 (or 12532 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 3942855 is about 1985.6623580055. The cubic root of 3942855 is about 157.9805429226.

It can be divided in two parts, 394 and 2855, that added together give a square (3249 = 57²).

The spelling of 3942855 in words is "three million, nine hundred forty-two thousand, eight hundred fifty-five".