3981127 has 4 divisors (see below), whose sum is σ = 4190680. Its totient is φ = 3771576.

The previous prime is 3981119. The next prime is 3981137. The reversal of 3981127 is 7211893.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 3981127 - 2³ = 3981119 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 (3981137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104748 + ... + 104785.

It is an arithmetic number, because the mean of its divisors is an integer number (1047670).

Almost surely, 2^3981127 is an apocalyptic number.

3981127 is a deficient number, since it is larger than the sum of its proper divisors (209553).

3981127 is a wasteful number, since it uses less digits than its factorization.

3981127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209552.

The product of its digits is 3024, while the sum is 31.

The square root of 3981127 is about 1995.2761713607. The cubic root of 3981127 is about 158.4900530135.

The spelling of 3981127 in words is "three million, nine hundred eighty-one thousand, one hundred twenty-seven".