8924921 has 4 divisors (see below), whose sum is σ = 9142644. Its totient is φ = 8707200.

The previous prime is 8924917. The next prime is 8924933. The reversal of 8924921 is 1294298.

8924921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 739600 + 8185321 = 860^2 + 2861^2 .

It is a cyclic number.

It is not a de Polignac number, because 8924921 - 2² = 8924917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8924911) 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, 108800 + ... + 108881.

It is an arithmetic number, because the mean of its divisors is an integer number (2285661).

Almost surely, 2^8924921 is an apocalyptic number.

It is an amenable number.

8924921 is a deficient number, since it is larger than the sum of its proper divisors (217723).

8924921 is a wasteful number, since it uses less digits than its factorization.

8924921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217722.

The product of its digits is 10368, while the sum is 35.

The square root of 8924921 is about 2987.4606273556. The cubic root of 8924921 is about 207.4283567444.

The spelling of 8924921 in words is "eight million, nine hundred twenty-four thousand, nine hundred twenty-one".