909201923 has 4 divisors (see below), whose sum is σ = 1039087920. Its totient is φ = 779315928.

The previous prime is 909201913. The next prime is 909201929. The reversal of 909201923 is 329102909.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 329102909 = 3229 ⋅101921.

It is a cyclic number.

It is not a de Polignac number, because 909201923 - 2¹⁴ = 909185539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (909201929) 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, 64942988 + ... + 64943001.

It is an arithmetic number, because the mean of its divisors is an integer number (259771980).

Almost surely, 2^909201923 is an apocalyptic number.

909201923 is a deficient number, since it is larger than the sum of its proper divisors (129885997).

909201923 is a wasteful number, since it uses less digits than its factorization.

909201923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129885996.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 909201923 is about 30152.9753589924. The cubic root of 909201923 is about 968.7687367698.

The spelling of 909201923 in words is "nine hundred nine million, two hundred one thousand, nine hundred twenty-three".