3581409 has 16 divisors (see below), whose sum is σ = 5189184. Its totient is φ = 2184000.

The previous prime is 3581393. The next prime is 3581419. The reversal of 3581409 is 9041853.

It is not a de Polignac number, because 3581409 - 2⁴ = 3581393 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3581419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4759 + ... + 5459.

It is an arithmetic number, because the mean of its divisors is an integer number (324324).

Almost surely, 2^3581409 is an apocalyptic number.

3581409 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

3581409 is a deficient number, since it is larger than the sum of its proper divisors (1607775).

3581409 is a wasteful number, since it uses less digits than its factorization.

3581409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 3581409 is about 1892.4610960334. The cubic root of 3581409 is about 152.9976077203.

The spelling of 3581409 in words is "three million, five hundred eighty-one thousand, four hundred nine".