3978127 has 8 divisors (see below), whose sum is σ = 4142016. Its totient is φ = 3817632.

The previous prime is 3978113. The next prime is 3978167. The reversal of 3978127 is 7218793.

3978127 is nontrivially palindromic in base 4.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3978127 - 2⁷ = 3977999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3978167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1693 + ... + 3289.

It is an arithmetic number, because the mean of its divisors is an integer number (517752).

Almost surely, 2^3978127 is an apocalyptic number.

3978127 is a deficient number, since it is larger than the sum of its proper divisors (163889).

3978127 is a wasteful number, since it uses less digits than its factorization.

3978127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697.

The product of its digits is 21168, while the sum is 37.

The square root of 3978127 is about 1994.5242540516. The cubic root of 3978127 is about 158.4502326611.

The spelling of 3978127 in words is "three million, nine hundred seventy-eight thousand, one hundred twenty-seven".