3977738 has 16 divisors (see below), whose sum is σ = 6168960. Its totient is φ = 1922400.

The previous prime is 3977731. The next prime is 3977741. The reversal of 3977738 is 8377793.

It is a happy number.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3977731) 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, 14543 + ... + 14813.

It is an arithmetic number, because the mean of its divisors is an integer number (385560).

Almost surely, 2^3977738 is an apocalyptic number.

3977738 is a deficient number, since it is larger than the sum of its proper divisors (2191222).

3977738 is a wasteful number, since it uses less digits than its factorization.

3977738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493.

The product of its digits is 222264, while the sum is 44.

The square root of 3977738 is about 1994.4267346784. The cubic root of 3977738 is about 158.4450678227.

It can be divided in two parts, 39 and 77738, that added together give a palindrome (77777).

The spelling of 3977738 in words is "three million, nine hundred seventy-seven thousand, seven hundred thirty-eight".