964209 has 4 divisors (see below), whose sum is σ = 1285616. Its totient is φ = 642804.

The previous prime is 964207. The next prime is 964213. The reversal of 964209 is 902469.

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, and also an emirpimes, since its reverse is a distinct semiprime: 902469 = 3 ⋅300823.

It is not a de Polignac number, because 964209 - 2¹ = 964207 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (964207) 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, 160699 + ... + 160704.

It is an arithmetic number, because the mean of its divisors is an integer number (321404).

2⁹⁶⁴²⁰⁹ is an apocalyptic number.

It is an amenable number.

964209 is a deficient number, since it is larger than the sum of its proper divisors (321407).

964209 is a wasteful number, since it uses less digits than its factorization.

964209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321406.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 964209 is about 981.9414442827. The cubic root of 964209 is about 98.7924434331.

The spelling of 964209 in words is "nine hundred sixty-four thousand, two hundred nine".