290534389 has 2 divisors, whose sum is σ = 290534390. Its totient is φ = 290534388.

The previous prime is 290534381. The next prime is 290534411. The reversal of 290534389 is 983435092.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 265364100 + 25170289 = 16290^2 + 5017^2 .

It is a cyclic number.

It is not a de Polignac number, because 290534389 - 2³ = 290534381 is a prime.

It is equal to p_15766909 and since 290534389 and 15766909 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (290534381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145267194 + 145267195.

It is an arithmetic number, because the mean of its divisors is an integer number (145267195).

Almost surely, 2^290534389 is an apocalyptic number.

It is an amenable number.

290534389 is a deficient number, since it is larger than the sum of its proper divisors (1).

290534389 is an equidigital number, since it uses as much as digits as its factorization.

290534389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 290534389 is about 17045.0693457082. The cubic root of 290534389 is about 662.3169174409.

The spelling of 290534389 in words is "two hundred ninety million, five hundred thirty-four thousand, three hundred eighty-nine".