290338489 has 4 divisors (see below), whose sum is σ = 331815424. Its totient is φ = 248861556.

The previous prime is 290338481. The next prime is 290338493. The reversal of 290338489 is 984833092.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 290338489 - 2³ = 290338481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (290338481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20738457 + ... + 20738470.

It is an arithmetic number, because the mean of its divisors is an integer number (82953856).

Almost surely, 2^290338489 is an apocalyptic number.

It is an amenable number.

290338489 is a deficient number, since it is larger than the sum of its proper divisors (41476935).

290338489 is an equidigital number, since it uses as much as digits as its factorization.

290338489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41476934.

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 290338489 is about 17039.3218468342. The cubic root of 290338489 is about 662.1680227812.

The spelling of 290338489 in words is "two hundred ninety million, three hundred thirty-eight thousand, four hundred eighty-nine".