290229664 has 12 divisors (see below), whose sum is σ = 571389714. Its totient is φ = 145114816.

The previous prime is 290229631. The next prime is 290229679. The reversal of 290229664 is 466922092.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 265429264 + 24800400 = 16292^2 + 4980^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4534807 + ... + 4534870.

Almost surely, 2^290229664 is an apocalyptic number.

It is an amenable number.

290229664 is a deficient number, since it is larger than the sum of its proper divisors (281160050).

290229664 is an equidigital number, since it uses as much as digits as its factorization.

290229664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9069687 (or 9069679 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 290229664 is about 17036.1281986254. The cubic root of 290229664 is about 662.0852809208.

The spelling of 290229664 in words is "two hundred ninety million, two hundred twenty-nine thousand, six hundred sixty-four".