3894309 has 12 divisors (see below), whose sum is σ = 5956236. Its totient is φ = 2443392.

The previous prime is 3894307. The next prime is 3894329. The reversal of 3894309 is 9034983.

It can be written as a sum of positive squares in 2 ways, for example, as 2490084 + 1404225 = 1578^2 + 1185^2 .

It is not a de Polignac number, because 3894309 - 2¹ = 3894307 is a prime.

It is an Ulam number.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3894307) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12574 + ... + 12879.

It is an arithmetic number, because the mean of its divisors is an integer number (496353).

Almost surely, 2^3894309 is an apocalyptic number.

It is an amenable number.

3894309 is a deficient number, since it is larger than the sum of its proper divisors (2061927).

3894309 is a wasteful number, since it uses less digits than its factorization.

3894309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25476 (or 25473 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 3894309 is about 1973.4003648525. The cubic root of 3894309 is about 157.3294904540.

The spelling of 3894309 in words is "three million, eight hundred ninety-four thousand, three hundred nine".