290032389 has 6 divisors (see below), whose sum is σ = 418935686. Its totient is φ = 193354920.

The previous prime is 290032367. The next prime is 290032411. The reversal of 290032389 is 983230092.

It is an interprime number because it is at equal distance from previous prime (290032367) and next prime (290032411).

It can be written as a sum of positive squares in only one way, i.e., 244672164 + 45360225 = 15642^2 + 6735^2 .

It is not a de Polignac number, because 290032389 - 2⁸ = 290032133 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 (290032349) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 16112902 + ... + 16112919.

Almost surely, 2^290032389 is an apocalyptic number.

It is an amenable number.

290032389 is a deficient number, since it is larger than the sum of its proper divisors (128903297).

290032389 is a wasteful number, since it uses less digits than its factorization.

290032389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32225827 (or 32225824 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 290032389 is about 17030.3373131597. The cubic root of 290032389 is about 661.9352359798.

The spelling of 290032389 in words is "two hundred ninety million, thirty-two thousand, three hundred eighty-nine".