965444221 has 8 divisors (see below), whose sum is σ = 1112053760. Its totient is φ = 821006928.

The previous prime is 965444209. The next prime is 965444231. The reversal of 965444221 is 122444569.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 965444221 - 2¹³ = 965436029 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (965444231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 542106 + ... + 543883.

It is an arithmetic number, because the mean of its divisors is an integer number (139006720).

Almost surely, 2^965444221 is an apocalyptic number.

It is an amenable number.

965444221 is a deficient number, since it is larger than the sum of its proper divisors (146609539).

965444221 is a wasteful number, since it uses less digits than its factorization.

965444221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086123.

The product of its digits is 69120, while the sum is 37.

The square root of 965444221 is about 31071.5983013427. The cubic root of 965444221 is about 988.3461217029.

The spelling of 965444221 in words is "nine hundred sixty-five million, four hundred forty-four thousand, two hundred twenty-one".