2870009 has 4 divisors (see below), whose sum is σ = 2994816. Its totient is φ = 2745204.

The previous prime is 2869987. The next prime is 2870017. The reversal of 2870009 is 9000782.

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 2870009 - 2¹² = 2865913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2870009.

It is not an unprimeable number, because it can be changed into a prime (2870039) 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, 62369 + ... + 62414.

It is an arithmetic number, because the mean of its divisors is an integer number (748704).

2^2870009 is an apocalyptic number.

It is an amenable number.

2870009 is a deficient number, since it is larger than the sum of its proper divisors (124807).

2870009 is a wasteful number, since it uses less digits than its factorization.

2870009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124806.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 2870009 is about 1694.1100908737. The cubic root of 2870009 is about 142.1110187812. Note that the first 3 decimals are identical.

The spelling of 2870009 in words is "two million, eight hundred seventy thousand, nine".