4391456 has 24 divisors (see below), whose sum is σ = 8881740. Its totient is φ = 2135808.

The previous prime is 4391449. The next prime is 4391483. The reversal of 4391456 is 6541934.

It can be written as a sum of positive squares in 2 ways, for example, as 4343056 + 48400 = 2084^2 + 220^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 671 + ... + 3038.

Almost surely, 2^4391456 is an apocalyptic number.

It is an amenable number.

4391456 is an abundant number, since it is smaller than the sum of its proper divisors (4490284).

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

4391456 is a wasteful number, since it uses less digits than its factorization.

4391456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3756 (or 3748 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 4391456 is about 2095.5801106138. The cubic root of 4391456 is about 163.7581205304.

The spelling of 4391456 in words is "four million, three hundred ninety-one thousand, four hundred fifty-six".