3888409 has 4 divisors (see below), whose sum is σ = 4443904. Its totient is φ = 3332916.

The previous prime is 3888397. The next prime is 3888413. The reversal of 3888409 is 9048883.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3888409 - 2⁷ = 3888281 is a prime.

It is a Duffinian number.

3888409 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3888509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277737 + ... + 277750.

It is an arithmetic number, because the mean of its divisors is an integer number (1110976).

Almost surely, 2^3888409 is an apocalyptic number.

It is an amenable number.

3888409 is a deficient number, since it is larger than the sum of its proper divisors (555495).

3888409 is an equidigital number, since it uses as much as digits as its factorization.

3888409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555494.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 3888409 is about 1971.9049165718. The cubic root of 3888409 is about 157.2499972618.

The spelling of 3888409 in words is "three million, eight hundred eighty-eight thousand, four hundred nine".