8914921 has 2 divisors, whose sum is σ = 8914922. Its totient is φ = 8914920.

The previous prime is 8914897. The next prime is 8914937. The reversal of 8914921 is 1294198.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7617600 + 1297321 = 2760^2 + 1139^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8914921 is a prime.

8914921 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (8914951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4457460 + 4457461.

It is an arithmetic number, because the mean of its divisors is an integer number (4457461).

Almost surely, 2^8914921 is an apocalyptic number.

It is an amenable number.

8914921 is a deficient number, since it is larger than the sum of its proper divisors (1).

8914921 is an equidigital number, since it uses as much as digits as its factorization.

8914921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 34.

The square root of 8914921 is about 2985.7864960509. The cubic root of 8914921 is about 207.3508561979.

The spelling of 8914921 in words is "eight million, nine hundred fourteen thousand, nine hundred twenty-one".