290291289 has 16 divisors (see below), whose sum is σ = 393994944. Its totient is φ = 190080000.

The previous prime is 290291249. The next prime is 290291293. The reversal of 290291289 is 982192092.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-290291289 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 290291289.

It is not an unprimeable number, because it can be changed into a prime (290291219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52329 + ... + 57609.

It is an arithmetic number, because the mean of its divisors is an integer number (24624684).

Almost surely, 2^290291289 is an apocalyptic number.

It is an amenable number.

290291289 is a deficient number, since it is larger than the sum of its proper divisors (103703655).

290291289 is a wasteful number, since it uses less digits than its factorization.

290291289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5608.

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 290291289 is about 17037.9367588919. The cubic root of 290291289 is about 662.1321382009.

The spelling of 290291289 in words is "two hundred ninety million, two hundred ninety-one thousand, two hundred eighty-nine".