909769923221 has 8 divisors (see below), whose sum is σ = 911398071360. Its totient is φ = 908142042528.

The previous prime is 909769923217. The next prime is 909769923253. The reversal of 909769923221 is 122329967909.

909769923221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 909769923221 - 2² = 909769923217 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 (909769923521) 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, 7505720 + ... + 7625966.

It is an arithmetic number, because the mean of its divisors is an integer number (113924758920).

Almost surely, 2^909769923221 is an apocalyptic number.

It is an amenable number.

909769923221 is a deficient number, since it is larger than the sum of its proper divisors (1628148139).

909769923221 is a wasteful number, since it uses less digits than its factorization.

909769923221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133723.

The product of its (nonzero) digits is 6613488, while the sum is 59.

The spelling of 909769923221 in words is "nine hundred nine billion, seven hundred sixty-nine million, nine hundred twenty-three thousand, two hundred twenty-one".