3785409 has 12 divisors (see below), whose sum is σ = 5705856. Its totient is φ = 2413752.

The previous prime is 3785401. The next prime is 3785417. The reversal of 3785409 is 9045873.

It is an interprime number because it is at equal distance from previous prime (3785401) and next prime (3785417).

It is not a de Polignac number, because 3785409 - 2³ = 3785401 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3785401) 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, 8937 + ... + 9350.

It is an arithmetic number, because the mean of its divisors is an integer number (475488).

Almost surely, 2^3785409 is an apocalyptic number.

It is an amenable number.

3785409 is a deficient number, since it is larger than the sum of its proper divisors (1920447).

3785409 is a wasteful number, since it uses less digits than its factorization.

3785409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18316 (or 18313 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 3785409 is about 1945.6127569483. The cubic root of 3785409 is about 155.8490897607.

The spelling of 3785409 in words is "three million, seven hundred eighty-five thousand, four hundred nine".