3969738 has 24 divisors (see below), whose sum is σ = 9107748. Its totient is φ = 1245312.

The previous prime is 3969737. The next prime is 3969751. The reversal of 3969738 is 8379693.

It is a happy number.

3969738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3790809 + 178929 = 1947^2 + 423^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3969693 and 3969702.

It is not an unprimeable number, because it can be changed into a prime (3969733) 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 11 ways as a sum of consecutive naturals, for example, 6181 + ... + 6792.

Almost surely, 2^3969738 is an apocalyptic number.

3969738 is an abundant number, since it is smaller than the sum of its proper divisors (5138010).

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

3969738 is a wasteful number, since it uses less digits than its factorization.

3969738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12998 (or 12995 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 3969738 is about 1992.4201364170. The cubic root of 3969738 is about 158.3387753131.

Subtracting from 3969738 its sum of digits (45), we obtain a palindrome (3969693).

The spelling of 3969738 in words is "three million, nine hundred sixty-nine thousand, seven hundred thirty-eight".