3931456 has 28 divisors (see below), whose sum is σ = 7973568. Its totient is φ = 1922432.

The previous prime is 3931439. The next prime is 3931457. The reversal of 3931456 is 6541393.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3931457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2355 + ... + 3661.

Almost surely, 2^3931456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3931456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3986784).

3931456 is an abundant number, since it is smaller than the sum of its proper divisors (4042112).

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

3931456 is a wasteful number, since it uses less digits than its factorization.

3931456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366 (or 1356 counting only the distinct ones).

The product of its digits is 9720, while the sum is 31.

The square root of 3931456 is about 1982.7899535755. The cubic root of 3931456 is about 157.8281526349.

It can be divided in two parts, 393 and 1456, that added together give a square (1849 = 43²).

The spelling of 3931456 in words is "three million, nine hundred thirty-one thousand, four hundred fifty-six".