969945653 has 4 divisors (see below), whose sum is σ = 970589088. Its totient is φ = 969302220.

The previous prime is 969945643. The next prime is 969945703. The reversal of 969945653 is 356549969.

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 969945653 - 2⁴ = 969945637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (969945623) 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, 319451 + ... + 322472.

It is an arithmetic number, because the mean of its divisors is an integer number (242647272).

Almost surely, 2^969945653 is an apocalyptic number.

It is an amenable number.

969945653 is a deficient number, since it is larger than the sum of its proper divisors (643435).

969945653 is a wasteful number, since it uses less digits than its factorization.

969945653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643434.

The product of its digits is 7873200, while the sum is 56.

The square root of 969945653 is about 31143.9505040706. The cubic root of 969945653 is about 989.8798116176.

The spelling of 969945653 in words is "nine hundred sixty-nine million, nine hundred forty-five thousand, six hundred fifty-three".