4428691 has 16 divisors (see below), whose sum is σ = 4925440. Its totient is φ = 3965760.

The previous prime is 4428689. The next prime is 4428701. The reversal of 4428691 is 1968244.

It is a cyclic number.

It is not a de Polignac number, because 4428691 - 2¹ = 4428689 is a prime.

It is a super-2 number, since 2×4428691² = 39226607946962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4428601) 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 15 ways as a sum of consecutive naturals, for example, 42946 + ... + 43048.

It is an arithmetic number, because the mean of its divisors is an integer number (307840).

Almost surely, 2^4428691 is an apocalyptic number.

4428691 is a deficient number, since it is larger than the sum of its proper divisors (496749).

4428691 is a wasteful number, since it uses less digits than its factorization.

4428691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226.

The product of its digits is 13824, while the sum is 34.

The square root of 4428691 is about 2104.4455326760. The cubic root of 4428691 is about 164.2196516453.

The spelling of 4428691 in words is "four million, four hundred twenty-eight thousand, six hundred ninety-one".