2897009 has 4 divisors (see below), whose sum is σ = 2933760. Its totient is φ = 2860260.

The previous prime is 2897003. The next prime is 2897023. The reversal of 2897009 is 9007982.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9007982 = 2 ⋅4503991.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2897009 is a prime.

It is a super-2 number, since 2×2897009² = 16785322292162, which contains 22 as substring.

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 2897009.

It is not an unprimeable number, because it can be changed into a prime (2897003) 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, 18257 + ... + 18414.

It is an arithmetic number, because the mean of its divisors is an integer number (733440).

2^2897009 is an apocalyptic number.

It is an amenable number.

2897009 is a deficient number, since it is larger than the sum of its proper divisors (36751).

2897009 is an equidigital number, since it uses as much as digits as its factorization.

2897009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36750.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 2897009 is about 1702.0602222013. The cubic root of 2897009 is about 142.5552714697. Note that the first 3 decimals are identical.

The spelling of 2897009 in words is "two million, eight hundred ninety-seven thousand, nine".