921404233 has 8 divisors (see below), whose sum is σ = 976626720. Its totient is φ = 866295360.

The previous prime is 921404203. The next prime is 921404243. The reversal of 921404233 is 332404129.

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 921404233 - 2²⁵ = 887849801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (921404203) 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, 11403 + ... + 44416.

It is an arithmetic number, because the mean of its divisors is an integer number (122078340).

Almost surely, 2^921404233 is an apocalyptic number.

It is an amenable number.

921404233 is a deficient number, since it is larger than the sum of its proper divisors (55222487).

921404233 is a wasteful number, since it uses less digits than its factorization.

921404233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56807.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 921404233 is about 30354.6410454810. The cubic root of 921404233 is about 973.0834084840.

The spelling of 921404233 in words is "nine hundred twenty-one million, four hundred four thousand, two hundred thirty-three".