3959655 has 32 divisors (see below), whose sum is σ = 7417344. Its totient is φ = 1766016.

The previous prime is 3959653. The next prime is 3959663. The reversal of 3959655 is 5569593.

It is not a de Polignac number, because 3959655 - 2¹ = 3959653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3959651) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4077 + ... + 4953.

It is an arithmetic number, because the mean of its divisors is an integer number (231792).

Almost surely, 2^3959655 is an apocalyptic number.

3959655 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3959655 is a deficient number, since it is larger than the sum of its proper divisors (3457689).

3959655 is a wasteful number, since it uses less digits than its factorization.

3959655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935.

The product of its digits is 182250, while the sum is 42.

The square root of 3959655 is about 1989.8881878136. Note that the first 3 decimals coincide. The cubic root of 3959655 is about 158.2046032768.

The spelling of 3959655 in words is "three million, nine hundred fifty-nine thousand, six hundred fifty-five".