3894569 has 6 divisors (see below), whose sum is σ = 4530474. Its totient is φ = 3338160.

The previous prime is 3894557. The next prime is 3894571. The reversal of 3894569 is 9654983.

It can be written as a sum of positive squares in only one way, i.e., 3312400 + 582169 = 1820^2 + 763^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3894569 is a prime.

It is a super-2 number, since 2×3894569² = 30335335391522, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3894529) 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 5 ways as a sum of consecutive naturals, for example, 39692 + ... + 39789.

It is an arithmetic number, because the mean of its divisors is an integer number (755079).

Almost surely, 2^3894569 is an apocalyptic number.

It is an amenable number.

3894569 is a deficient number, since it is larger than the sum of its proper divisors (635905).

3894569 is an equidigital number, since it uses as much as digits as its factorization.

3894569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79495 (or 79488 counting only the distinct ones).

The product of its digits is 233280, while the sum is 44.

The square root of 3894569 is about 1973.4662398937. The cubic root of 3894569 is about 157.3329916962.

The spelling of 3894569 in words is "three million, eight hundred ninety-four thousand, five hundred sixty-nine".