3949863 has 4 divisors (see below), whose sum is σ = 5266488. Its totient is φ = 2633240.

The previous prime is 3949849. The next prime is 3949867. The reversal of 3949863 is 3689493.

3949863 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.

It is a cyclic number.

It is not a de Polignac number, because 3949863 - 2¹⁰ = 3948839 is a prime.

It is a D-number.

3949863 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3949867) 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, 658308 + ... + 658313.

It is an arithmetic number, because the mean of its divisors is an integer number (1316622).

Almost surely, 2^3949863 is an apocalyptic number.

3949863 is a deficient number, since it is larger than the sum of its proper divisors (1316625).

3949863 is a wasteful number, since it uses less digits than its factorization.

3949863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316624.

The product of its digits is 139968, while the sum is 42.

The square root of 3949863 is about 1987.4262250459. The cubic root of 3949863 is about 158.0740853226.

The spelling of 3949863 in words is "three million, nine hundred forty-nine thousand, eight hundred sixty-three".