7290009 has 12 divisors (see below), whose sum is σ = 10576852. Its totient is φ = 4838400.

The previous prime is 7290001. The next prime is 7290037. The reversal of 7290009 is 9000927.

It can be written as a sum of positive squares in 2 ways, for example, as 5475600 + 1814409 = 2340^2 + 1347^2 .

It is not a de Polignac number, because 7290009 - 2³ = 7290001 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 (7290001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 489 + ... + 3849.

Almost surely, 2^7290009 is an apocalyptic number.

It is an amenable number.

7290009 is a deficient number, since it is larger than the sum of its proper divisors (3286843).

7290009 is a wasteful number, since it uses less digits than its factorization.

7290009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3608 (or 3605 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 7290009 is about 2700.0016666662. The cubic root of 7290009 is about 193.8992018967.

The spelling of 7290009 in words is "seven million, two hundred ninety thousand, nine".