8921943 has 6 divisors (see below), whose sum is σ = 12887264. Its totient is φ = 5947956.

The previous prime is 8921917. The next prime is 8921951. The reversal of 8921943 is 3491298.

It is not a de Polignac number, because 8921943 - 2⁵ = 8921911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8921898 and 8921907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8920943) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 495655 + ... + 495672.

Almost surely, 2^8921943 is an apocalyptic number.

8921943 is a deficient number, since it is larger than the sum of its proper divisors (3965321).

8921943 is a wasteful number, since it uses less digits than its factorization.

8921943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991333 (or 991330 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 8921943 is about 2986.9621691612. The cubic root of 8921943 is about 207.4052831372.

The spelling of 8921943 in words is "eight million, nine hundred twenty-one thousand, nine hundred forty-three".