3977427 has 8 divisors (see below), whose sum is σ = 5312464. Its totient is φ = 2647008.

The previous prime is 3977419. The next prime is 3977429. The reversal of 3977427 is 7247793.

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

It is not a de Polignac number, because 3977427 - 2³ = 3977419 is a prime.

It is a Duffinian number.

3977427 is a lucky number.

It is a zygodrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (3977429) 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, 2673 + ... + 3885.

It is an arithmetic number, because the mean of its divisors is an integer number (664058).

Almost surely, 2^3977427 is an apocalyptic number.

3977427 is a deficient number, since it is larger than the sum of its proper divisors (1335037).

3977427 is a wasteful number, since it uses less digits than its factorization.

3977427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2309.

The product of its digits is 74088, while the sum is 39.

The square root of 3977427 is about 1994.3487658883. The cubic root of 3977427 is about 158.4409383651.

It can be divided in two parts, 39 and 77427, that multiplied together give a triangular number (3019653 = T₂₄₅₇).

The spelling of 3977427 in words is "three million, nine hundred seventy-seven thousand, four hundred twenty-seven".