7091009 has 4 divisors (see below), whose sum is σ = 7464240. Its totient is φ = 6717780.

The previous prime is 7091003. The next prime is 7091017. The reversal of 7091009 is 9001907.

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: 9001907 = 2027 ⋅4441.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7091009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7091003) 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, 186587 + ... + 186624.

It is an arithmetic number, because the mean of its divisors is an integer number (1866060).

Almost surely, 2^7091009 is an apocalyptic number.

It is an amenable number.

7091009 is a deficient number, since it is larger than the sum of its proper divisors (373231).

7091009 is a wasteful number, since it uses less digits than its factorization.

7091009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373230.

The product of its (nonzero) digits is 567, while the sum is 26.

The square root of 7091009 is about 2662.8948533504. The cubic root of 7091009 is about 192.1185700632.

The spelling of 7091009 in words is "seven million, ninety-one thousand, nine".