4447213 has 4 divisors (see below), whose sum is σ = 4454460. Its totient is φ = 4439968.

The previous prime is 4447207. The next prime is 4447249. The reversal of 4447213 is 3127444.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4272489 + 174724 = 2067^2 + 418^2 .

It is a cyclic number.

It is not a de Polignac number, because 4447213 - 2⁵ = 4447181 is a prime.

It is a d-powerful number, because it can be written as 4³ + 4⁶ + 4¹¹ + 7⁶ + 2¹⁷ + 1 + 3³ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4447253) 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, 2608 + ... + 3961.

It is an arithmetic number, because the mean of its divisors is an integer number (1113615).

Almost surely, 2^4447213 is an apocalyptic number.

It is an amenable number.

4447213 is a deficient number, since it is larger than the sum of its proper divisors (7247).

4447213 is an equidigital number, since it uses as much as digits as its factorization.

4447213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7246.

The product of its digits is 2688, while the sum is 25.

The square root of 4447213 is about 2108.8416251582. The cubic root of 4447213 is about 164.4482704281.

The spelling of 4447213 in words is "four million, four hundred forty-seven thousand, two hundred thirteen".