8969693921 has 4 divisors (see below), whose sum is σ = 9056778432. Its totient is φ = 8882609412.

The previous prime is 8969693899. The next prime is 8969693933. The reversal of 8969693921 is 1293969698.

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 8969693921 - 2⁶ = 8969693857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8969693021) 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, 43542101 + ... + 43542306.

It is an arithmetic number, because the mean of its divisors is an integer number (2264194608).

Almost surely, 2^8969693921 is an apocalyptic number.

It is an amenable number.

8969693921 is a deficient number, since it is larger than the sum of its proper divisors (87084511).

8969693921 is a wasteful number, since it uses less digits than its factorization.

8969693921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87084510.

The product of its digits is 11337408, while the sum is 62.

The square root of 8969693921 is about 94708.4680532844. The cubic root of 8969693921 is about 2077.7464128481.

The spelling of 8969693921 in words is "eight billion, nine hundred sixty-nine million, six hundred ninety-three thousand, nine hundred twenty-one".