2649409 has 8 divisors (see below), whose sum is σ = 3040128. Its totient is φ = 2261760.

The previous prime is 2649403. The next prime is 2649421. The reversal of 2649409 is 9049462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2649409 - 2⁷ = 2649281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2649403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1569 + ... + 2785.

It is an arithmetic number, because the mean of its divisors is an integer number (380016).

2^2649409 is an apocalyptic number.

It is an amenable number.

2649409 is a deficient number, since it is larger than the sum of its proper divisors (390719).

2649409 is a wasteful number, since it uses less digits than its factorization.

2649409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1535.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 2649409 is about 1627.7005252810. The cubic root of 2649409 is about 138.3724622782.

The spelling of 2649409 in words is "two million, six hundred forty-nine thousand, four hundred nine".