921134671 has 4 divisors (see below), whose sum is σ = 921501144. Its totient is φ = 920768200.

The previous prime is 921134657. The next prime is 921134677. The reversal of 921134671 is 176431129.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 921134671 - 2⁵ = 921134639 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 (921134677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179440 + ... + 184501.

It is an arithmetic number, because the mean of its divisors is an integer number (230375286).

Almost surely, 2^921134671 is an apocalyptic number.

921134671 is a deficient number, since it is larger than the sum of its proper divisors (366473).

921134671 is a wasteful number, since it uses less digits than its factorization.

921134671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366472.

The product of its digits is 9072, while the sum is 34.

The square root of 921134671 is about 30350.2005100461. The cubic root of 921134671 is about 972.9885055506.

The spelling of 921134671 in words is "nine hundred twenty-one million, one hundred thirty-four thousand, six hundred seventy-one".