4002608409 has 4 divisors (see below), whose sum is σ = 5336811216. Its totient is φ = 2668405604.

The previous prime is 4002608383. The next prime is 4002608411. The reversal of 4002608409 is 9048062004.

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 4002608409 - 2⁵ = 4002608377 is a prime.

It is a super-2 number, since 2×4002608409² = 32041748151595022562, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4002608409.

It is not an unprimeable number, because it can be changed into a prime (4002608509) 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, 667101399 + ... + 667101404.

It is an arithmetic number, because the mean of its divisors is an integer number (1334202804).

Almost surely, 2^4002608409 is an apocalyptic number.

It is an amenable number.

4002608409 is a deficient number, since it is larger than the sum of its proper divisors (1334202807).

4002608409 is a wasteful number, since it uses less digits than its factorization.

4002608409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334202806.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 4002608409 is about 63266.1711264401. The cubic root of 4002608409 is about 1587.7460262588.

The spelling of 4002608409 in words is "four billion, two million, six hundred eight thousand, four hundred nine".