969641389 has 4 divisors (see below), whose sum is σ = 975058560. Its totient is φ = 964224220.

The previous prime is 969641369. The next prime is 969641411. The reversal of 969641389 is 983146969.

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 969641389 - 2²³ = 961252781 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 (969641329) 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, 2708317 + ... + 2708674.

It is an arithmetic number, because the mean of its divisors is an integer number (243764640).

Almost surely, 2^969641389 is an apocalyptic number.

It is an amenable number.

969641389 is a deficient number, since it is larger than the sum of its proper divisors (5417171).

969641389 is a wasteful number, since it uses less digits than its factorization.

969641389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5417170.

The product of its digits is 2519424, while the sum is 55.

The square root of 969641389 is about 31139.0653199482. The cubic root of 969641389 is about 989.7762950654.

The spelling of 969641389 in words is "nine hundred sixty-nine million, six hundred forty-one thousand, three hundred eighty-nine".