290534399 has 4 divisors (see below), whose sum is σ = 295297320. Its totient is φ = 285771480.

The previous prime is 290534389. The next prime is 290534411. The reversal of 290534399 is 993435092.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 290534399 - 2⁸ = 290534143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290534389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2381369 + ... + 2381490.

It is an arithmetic number, because the mean of its divisors is an integer number (73824330).

Almost surely, 2^290534399 is an apocalyptic number.

290534399 is a deficient number, since it is larger than the sum of its proper divisors (4762921).

290534399 is an equidigital number, since it uses as much as digits as its factorization.

290534399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4762920.

The product of its (nonzero) digits is 262440, while the sum is 44.

The square root of 290534399 is about 17045.0696390481. The cubic root of 290534399 is about 662.3169250398.

The spelling of 290534399 in words is "two hundred ninety million, five hundred thirty-four thousand, three hundred ninety-nine".