3947853 has 16 divisors (see below), whose sum is σ = 6478976. Its totient is φ = 2082240.

The previous prime is 3947851. The next prime is 3947861. The reversal of 3947853 is 3587493.

It is not a de Polignac number, because 3947853 - 2¹ = 3947851 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

3947853 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3947851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6958 + ... + 7503.

It is an arithmetic number, because the mean of its divisors is an integer number (404936).

Almost surely, 2^3947853 is an apocalyptic number.

It is an amenable number.

3947853 is a deficient number, since it is larger than the sum of its proper divisors (2531123).

3947853 is a wasteful number, since it uses less digits than its factorization.

3947853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14484.

The product of its digits is 90720, while the sum is 39.

The square root of 3947853 is about 1986.9204815493. The cubic root of 3947853 is about 158.0472672767.

The spelling of 3947853 in words is "three million, nine hundred forty-seven thousand, eight hundred fifty-three".