3972127 has 4 divisors (see below), whose sum is σ = 3978280. Its totient is φ = 3965976.

The previous prime is 3972119. The next prime is 3972139. The reversal of 3972127 is 7212793.

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 3972127 - 2³ = 3972119 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 (3972107) 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 3 ways as a sum of consecutive naturals, for example, 1977 + ... + 3442.

It is an arithmetic number, because the mean of its divisors is an integer number (994570).

Almost surely, 2^3972127 is an apocalyptic number.

3972127 is a deficient number, since it is larger than the sum of its proper divisors (6153).

3972127 is an equidigital number, since it uses as much as digits as its factorization.

3972127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6152.

The product of its digits is 5292, while the sum is 31.

The square root of 3972127 is about 1993.0195683936. The cubic root of 3972127 is about 158.3705318571.

The spelling of 3972127 in words is "three million, nine hundred seventy-two thousand, one hundred twenty-seven".