3971738 has 8 divisors (see below), whose sum is σ = 6096288. Its totient is φ = 1939644.

The previous prime is 3971731. The next prime is 3971743. The reversal of 3971738 is 8371793.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (3971731) 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, 23006 + ... + 23177.

It is an arithmetic number, because the mean of its divisors is an integer number (762036).

Almost surely, 2^3971738 is an apocalyptic number.

3971738 is a deficient number, since it is larger than the sum of its proper divisors (2124550).

3971738 is a wasteful number, since it uses less digits than its factorization.

3971738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46228.

The product of its digits is 31752, while the sum is 38.

The square root of 3971738 is about 1992.9219753919. The cubic root of 3971738 is about 158.3653618186.

It can be divided in two parts, 397 and 1738, that multiplied together give a palindrome (689986).

The spelling of 3971738 in words is "three million, nine hundred seventy-one thousand, seven hundred thirty-eight".