3040509 has 4 divisors (see below), whose sum is σ = 4054016. Its totient is φ = 2027004.

The previous prime is 3040489. The next prime is 3040517. The reversal of 3040509 is 9050403.

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 3040509 - 2⁷ = 3040381 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3040579) 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, 506749 + ... + 506754.

It is an arithmetic number, because the mean of its divisors is an integer number (1013504).

Almost surely, 2^3040509 is an apocalyptic number.

It is an amenable number.

3040509 is a deficient number, since it is larger than the sum of its proper divisors (1013507).

3040509 is a wasteful number, since it uses less digits than its factorization.

3040509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013506.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 3040509 is about 1743.7055370675. The cubic root of 3040509 is about 144.8712134322.

The spelling of 3040509 in words is "three million, forty thousand, five hundred nine".