3913887 has 16 divisors (see below), whose sum is σ = 5499648. Its totient is φ = 2471040.

The previous prime is 3913837. The next prime is 3913907. The reversal of 3913887 is 7883193.

It is not a de Polignac number, because 3913887 - 2²⁰ = 2865311 is a prime.

It is a super-2 number, since 2×3913887² = 30637022897538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3913807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8823 + ... + 9255.

It is an arithmetic number, because the mean of its divisors is an integer number (343728).

Almost surely, 2^3913887 is an apocalyptic number.

3913887 is a deficient number, since it is larger than the sum of its proper divisors (1585761).

3913887 is a wasteful number, since it uses less digits than its factorization.

3913887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590.

The product of its digits is 36288, while the sum is 39.

The square root of 3913887 is about 1978.3546193744. The cubic root of 3913887 is about 157.5926992719.

It can be divided in two parts, 391 and 3887, that added together give a triangular number (4278 = T₉₂).

The spelling of 3913887 in words is "three million, nine hundred thirteen thousand, eight hundred eighty-seven".