4428791 has 4 divisors (see below), whose sum is σ = 4434672. Its totient is φ = 4422912.

The previous prime is 4428773. The next prime is 4428817. The reversal of 4428791 is 1978244.

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

It is a cyclic number.

It is not a de Polignac number, because 4428791 - 2¹⁸ = 4166647 is a prime.

It is a super-2 number, since 2×4428791² = 39228379443362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4428701) 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, 1610 + ... + 3383.

It is an arithmetic number, because the mean of its divisors is an integer number (1108668).

Almost surely, 2^4428791 is an apocalyptic number.

4428791 is a deficient number, since it is larger than the sum of its proper divisors (5881).

4428791 is an equidigital number, since it uses as much as digits as its factorization.

4428791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5880.

The product of its digits is 16128, while the sum is 35.

The square root of 4428791 is about 2104.4692917693. The cubic root of 4428791 is about 164.2208876645.

The spelling of 4428791 in words is "four million, four hundred twenty-eight thousand, seven hundred ninety-one".