3977432 has 16 divisors (see below), whose sum is σ = 7479600. Its totient is φ = 1982880.

The previous prime is 3977431. The next prime is 3977447. The reversal of 3977432 is 2347793.

Added to its reverse (2347793) it gives a square (6325225 = 2515²).

3977432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 3977392 and 3977401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3977431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3869 + ... + 4787.

It is an arithmetic number, because the mean of its divisors is an integer number (467475).

Almost surely, 2^3977432 is an apocalyptic number.

It is an amenable number.

3977432 is a deficient number, since it is larger than the sum of its proper divisors (3502168).

3977432 is a wasteful number, since it uses less digits than its factorization.

3977432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1466 (or 1462 counting only the distinct ones).

The product of its digits is 31752, while the sum is 35.

The square root of 3977432 is about 1994.3500194299. The cubic root of 3977432 is about 158.4410047568.

Adding to 3977432 its reverse (2347793), we get a square (6325225 = 2515²).

The spelling of 3977432 in words is "three million, nine hundred seventy-seven thousand, four hundred thirty-two".