326690489 has 4 divisors (see below), whose sum is σ = 326802000. Its totient is φ = 326578980.

The previous prime is 326690477. The next prime is 326690509. The reversal of 326690489 is 984096623.

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 326690489 - 2⁸ = 326690233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (326695489) 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, 51239 + ... + 57260.

It is an arithmetic number, because the mean of its divisors is an integer number (81700500).

Almost surely, 2^326690489 is an apocalyptic number.

It is an amenable number.

326690489 is a deficient number, since it is larger than the sum of its proper divisors (111511).

326690489 is a wasteful number, since it uses less digits than its factorization.

326690489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111510.

The product of its (nonzero) digits is 559872, while the sum is 47.

The square root of 326690489 is about 18074.5812952887. The cubic root of 326690489 is about 688.7244438109.

The spelling of 326690489 in words is "three hundred twenty-six million, six hundred ninety thousand, four hundred eighty-nine".