964391 has 4 divisors (see below), whose sum is σ = 973512. Its totient is φ = 955272.

The previous prime is 964373. The next prime is 964417. The reversal of 964391 is 193469.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 964391 - 2¹⁰ = 963367 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 (964351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4400 + ... + 4613.

It is an arithmetic number, because the mean of its divisors is an integer number (243378).

2⁹⁶⁴³⁹¹ is an apocalyptic number.

964391 is a deficient number, since it is larger than the sum of its proper divisors (9121).

964391 is a wasteful number, since it uses less digits than its factorization.

964391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9120.

The product of its digits is 5832, while the sum is 32.

The square root of 964391 is about 982.0341134604. The cubic root of 964391 is about 98.7986589228.

The spelling of 964391 in words is "nine hundred sixty-four thousand, three hundred ninety-one".