3971396 has 48 divisors (see below), whose sum is σ = 8382528. Its totient is φ = 1622400.

The previous prime is 3971393. The next prime is 3971411. The reversal of 3971396 is 6931793.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3971393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30251 + ... + 30381.

It is an arithmetic number, because the mean of its divisors is an integer number (174636).

Almost surely, 2^3971396 is an apocalyptic number.

It is an amenable number.

3971396 is an abundant number, since it is smaller than the sum of its proper divisors (4411132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3971396 is a wasteful number, since it uses less digits than its factorization.

3971396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212 (or 210 counting only the distinct ones).

The product of its digits is 30618, while the sum is 38.

The square root of 3971396 is about 1992.8361698845. The cubic root of 3971396 is about 158.3608161589.

It can be divided in two parts, 3971 and 396, that multiplied together give a square (1572516 = 1254²).

The spelling of 3971396 in words is "three million, nine hundred seventy-one thousand, three hundred ninety-six".