2973409 has 4 divisors (see below), whose sum is σ = 3015360. Its totient is φ = 2931460.

The previous prime is 2973403. The next prime is 2973413. The reversal of 2973409 is 9043792.

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 2973409 - 2⁹ = 2972897 is a prime.

It is a super-2 number, since 2×2973409² = 17682322162562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2973403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20869 + ... + 21010.

It is an arithmetic number, because the mean of its divisors is an integer number (753840).

2^2973409 is an apocalyptic number.

It is an amenable number.

2973409 is a deficient number, since it is larger than the sum of its proper divisors (41951).

2973409 is an equidigital number, since it uses as much as digits as its factorization.

2973409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41950.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 2973409 is about 1724.3575615284. The cubic root of 2973409 is about 143.7975711491.

The spelling of 2973409 in words is "two million, nine hundred seventy-three thousand, four hundred nine".