3977131 has 4 divisors (see below), whose sum is σ = 4044600. Its totient is φ = 3909664.

The previous prime is 3977117. The next prime is 3977153. The reversal of 3977131 is 1317793.

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 3977131 - 2⁷ = 3977003 is a prime.

It is a super-2 number, since 2×3977131² = 31635141982322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3977093 and 3977102.

It is not an unprimeable number, because it can be changed into a prime (3977101) 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, 33646 + ... + 33763.

It is an arithmetic number, because the mean of its divisors is an integer number (1011150).

Almost surely, 2^3977131 is an apocalyptic number.

3977131 is a deficient number, since it is larger than the sum of its proper divisors (67469).

3977131 is an equidigital number, since it uses as much as digits as its factorization.

3977131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67468.

The product of its digits is 3969, while the sum is 31.

The square root of 3977131 is about 1994.2745548194. The cubic root of 3977131 is about 158.4370078776.

The spelling of 3977131 in words is "three million, nine hundred seventy-seven thousand, one hundred thirty-one".