3911887 has 16 divisors (see below), whose sum is σ = 4810752. Its totient is φ = 3104640.

The previous prime is 3911881. The next prime is 3911911. The reversal of 3911887 is 7881193.

It is not a de Polignac number, because 3911887 - 2³ = 3911879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3911881) 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, 8218 + ... + 8680.

It is an arithmetic number, because the mean of its divisors is an integer number (300672).

Almost surely, 2^3911887 is an apocalyptic number.

3911887 is a deficient number, since it is larger than the sum of its proper divisors (898865).

3911887 is a wasteful number, since it uses less digits than its factorization.

3911887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558.

The product of its digits is 12096, while the sum is 37.

The square root of 3911887 is about 1977.8490842327. The cubic root of 3911887 is about 157.5658513582.

It can be divided in two parts, 391 and 1887, that added together give a triangular number (2278 = T₆₇).

The spelling of 3911887 in words is "three million, nine hundred eleven thousand, eight hundred eighty-seven".