4638247 has 2 divisors, whose sum is σ = 4638248. Its totient is φ = 4638246.

The previous prime is 4638241. The next prime is 4638287. The reversal of 4638247 is 7428364.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4638247 - 2³ = 4638239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4638241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2319123 + 2319124.

It is an arithmetic number, because the mean of its divisors is an integer number (2319124).

Almost surely, 2^4638247 is an apocalyptic number.

4638247 is a deficient number, since it is larger than the sum of its proper divisors (1).

4638247 is an equidigital number, since it uses as much as digits as its factorization.

4638247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 34.

The square root of 4638247 is about 2153.6589795044. The cubic root of 4638247 is about 166.7700110175.

The spelling of 4638247 in words is "four million, six hundred thirty-eight thousand, two hundred forty-seven".