934561921 has 4 divisors (see below), whose sum is σ = 975195072. Its totient is φ = 893928772.

The previous prime is 934561891. The next prime is 934561931. The reversal of 934561921 is 129165439.

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 934561921 - 2⁵ = 934561889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (934561931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20316541 + ... + 20316586.

It is an arithmetic number, because the mean of its divisors is an integer number (243798768).

Almost surely, 2^934561921 is an apocalyptic number.

It is an amenable number.

934561921 is a deficient number, since it is larger than the sum of its proper divisors (40633151).

934561921 is a wasteful number, since it uses less digits than its factorization.

934561921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40633150.

The product of its digits is 58320, while the sum is 40.

The square root of 934561921 is about 30570.6055059431. The cubic root of 934561921 is about 977.6934234357.

The spelling of 934561921 in words is "nine hundred thirty-four million, five hundred sixty-one thousand, nine hundred twenty-one".