290906 has 16 divisors (see below), whose sum is σ = 544320. Its totient is φ = 113280.

The previous prime is 290897. The next prime is 290923. The reversal of 290906 is 609092.

290906 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 290906.

It is an unprimeable number.

290906 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 791 + ... + 1098.

It is an arithmetic number, because the mean of its divisors is an integer number (34020).

2²⁹⁰⁹⁰⁶ is an apocalyptic number.

290906 is a deficient number, since it is larger than the sum of its proper divisors (253414).

290906 is a wasteful number, since it uses less digits than its factorization.

290906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1909.

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

The square root of 290906 is about 539.3570246136. The cubic root of 290906 is about 66.2599178222.

Adding to 290906 its reverse (609092), we get a palindrome (899998).

The spelling of 290906 in words is "two hundred ninety thousand, nine hundred six".