4121647 has 2 divisors, whose sum is σ = 4121648. Its totient is φ = 4121646.

The previous prime is 4121641. The next prime is 4121657. The reversal of 4121647 is 7461214.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4121647 - 2¹⁵ = 4088879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4121641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2060823 + 2060824.

It is an arithmetic number, because the mean of its divisors is an integer number (2060824).

Almost surely, 2^4121647 is an apocalyptic number.

4121647 is a deficient number, since it is larger than the sum of its proper divisors (1).

4121647 is an equidigital number, since it uses as much as digits as its factorization.

4121647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1344, while the sum is 25.

The square root of 4121647 is about 2030.1839818105. The cubic root of 4121647 is about 160.3332507303. Note that the first 3 decimals are identical.

The spelling of 4121647 in words is "four million, one hundred twenty-one thousand, six hundred forty-seven".