2672409 has 4 divisors (see below), whose sum is σ = 3563216. Its totient is φ = 1781604.

The previous prime is 2672401. The next prime is 2672413. The reversal of 2672409 is 9042762.

It is a happy number.

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 not a de Polignac number, because 2672409 - 2³ = 2672401 is a prime.

It is a D-number.

It is a Duffinian number.

2672409 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2672401) 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, 445399 + ... + 445404.

It is an arithmetic number, because the mean of its divisors is an integer number (890804).

2^2672409 is an apocalyptic number.

It is an amenable number.

2672409 is a deficient number, since it is larger than the sum of its proper divisors (890807).

2672409 is an equidigital number, since it uses as much as digits as its factorization.

2672409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890806.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 2672409 is about 1634.7504396696. The cubic root of 2672409 is about 138.7717212970.

It can be divided in two parts, 2672 and 409, that added together give a triangular number (3081 = T₇₈).

The spelling of 2672409 in words is "two million, six hundred seventy-two thousand, four hundred nine".