325209989 has 16 divisors (see below), whose sum is σ = 361187904. Its totient is φ = 290908800.

The previous prime is 325209959. The next prime is 325210007. The reversal of 325209989 is 989902523.

It is a de Polignac number, because none of the positive numbers 2^k-325209989 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 (325209919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71009 + ... + 75449.

It is an arithmetic number, because the mean of its divisors is an integer number (22574244).

Almost surely, 2^325209989 is an apocalyptic number.

It is an amenable number.

325209989 is a deficient number, since it is larger than the sum of its proper divisors (35977915).

325209989 is a wasteful number, since it uses less digits than its factorization.

325209989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4628.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 325209989 is about 18033.5794838407. The cubic root of 325209989 is about 687.6824782395.

The spelling of 325209989 in words is "three hundred twenty-five million, two hundred nine thousand, nine hundred eighty-nine".