964955809 has 4 divisors (see below), whose sum is σ = 974324416. Its totient is φ = 955587204.

The previous prime is 964955807. The next prime is 964955821. The reversal of 964955809 is 908559469.

It is a happy number.

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 964955809 - 2¹ = 964955807 is a prime.

It is a super-2 number, since 2×964955809² = 1862279426645688962, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 964955809.

It is not an unprimeable number, because it can be changed into a prime (964955807) 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, 4684149 + ... + 4684354.

It is an arithmetic number, because the mean of its divisors is an integer number (243581104).

Almost surely, 2^964955809 is an apocalyptic number.

It is an amenable number.

964955809 is a deficient number, since it is larger than the sum of its proper divisors (9368607).

964955809 is a wasteful number, since it uses less digits than its factorization.

964955809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9368606.

The product of its (nonzero) digits is 3499200, while the sum is 55.

The square root of 964955809 is about 31063.7378465632. The cubic root of 964955809 is about 988.1794276153.

The spelling of 964955809 in words is "nine hundred sixty-four million, nine hundred fifty-five thousand, eight hundred nine".