2867409 has 6 divisors (see below), whose sum is σ = 4141826. Its totient is φ = 1911600.

The previous prime is 2867383. The next prime is 2867429. The reversal of 2867409 is 9047682.

It can be written as a sum of positive squares in only one way, i.e., 2259009 + 608400 = 1503^2 + 780^2 .

It is not a de Polignac number, because 2867409 - 2⁵ = 2867377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2867429) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 159292 + ... + 159309.

2^2867409 is an apocalyptic number.

It is an amenable number.

2867409 is a deficient number, since it is larger than the sum of its proper divisors (1274417).

2867409 is a wasteful number, since it uses less digits than its factorization.

2867409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318607 (or 318604 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 2867409 is about 1693.3425524683. The cubic root of 2867409 is about 142.0680920539.

The spelling of 2867409 in words is "two million, eight hundred sixty-seven thousand, four hundred nine".