4369921 has 2 divisors, whose sum is σ = 4369922. Its totient is φ = 4369920.

The previous prime is 4369907. The next prime is 4369933. The reversal of 4369921 is 1299634.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2772225 + 1597696 = 1665^2 + 1264^2 .

It is a cyclic number.

It is not a de Polignac number, because 4369921 - 2¹¹ = 4367873 is a prime.

It is not a weakly prime, because it can be changed into another prime (4369991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2184960 + 2184961.

It is an arithmetic number, because the mean of its divisors is an integer number (2184961).

Almost surely, 2^4369921 is an apocalyptic number.

It is an amenable number.

4369921 is a deficient number, since it is larger than the sum of its proper divisors (1).

4369921 is an equidigital number, since it uses as much as digits as its factorization.

4369921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 34.

The square root of 4369921 is about 2090.4356005388. The cubic root of 4369921 is about 163.4900005419.

The spelling of 4369921 in words is "four million, three hundred sixty-nine thousand, nine hundred twenty-one".