290609 has 8 divisors (see below), whose sum is σ = 328320. Its totient is φ = 254800.

The previous prime is 290597. The next prime is 290611. The reversal of 290609 is 906092.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 290609 - 2⁴ = 290593 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 290609.

It is not an unprimeable number, because it can be changed into a prime (290659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137 + ... + 774.

It is an arithmetic number, because the mean of its divisors is an integer number (41040).

2²⁹⁰⁶⁰⁹ is an apocalyptic number.

290609 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

290609 is a deficient number, since it is larger than the sum of its proper divisors (37711).

290609 is a wasteful number, since it uses less digits than its factorization.

290609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 290609 is about 539.0816264723. The cubic root of 290609 is about 66.2373608261.

The spelling of 290609 in words is "two hundred ninety thousand, six hundred nine".