3985155 has 48 divisors (see below), whose sum is σ = 7488000. Its totient is φ = 1954368.

The previous prime is 3985103. The next prime is 3985181. The reversal of 3985155 is 5515893.

It is a happy number.

It is not a de Polignac number, because 3985155 - 2⁷ = 3985027 is a prime.

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 50406 + ... + 50484.

It is an arithmetic number, because the mean of its divisors is an integer number (156000).

Almost surely, 2^3985155 is an apocalyptic number.

3985155 is a deficient number, since it is larger than the sum of its proper divisors (3502845).

3985155 is a wasteful number, since it uses less digits than its factorization.

3985155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 165 counting only the distinct ones).

The product of its digits is 27000, while the sum is 36.

The square root of 3985155 is about 1996.2853002514. The cubic root of 3985155 is about 158.5434870243.

The spelling of 3985155 in words is "three million, nine hundred eighty-five thousand, one hundred fifty-five".