4638659 has 2 divisors, whose sum is σ = 4638660. Its totient is φ = 4638658.

The previous prime is 4638631. The next prime is 4638677. The reversal of 4638659 is 9568364.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4638659 - 2¹⁶ = 4573123 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4638629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2319329 + 2319330.

It is an arithmetic number, because the mean of its divisors is an integer number (2319330).

Almost surely, 2^4638659 is an apocalyptic number.

4638659 is a deficient number, since it is larger than the sum of its proper divisors (1).

4638659 is an equidigital number, since it uses as much as digits as its factorization.

4638659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 41.

The square root of 4638659 is about 2153.7546285499. The cubic root of 4638659 is about 166.7749487458.

The spelling of 4638659 in words is "four million, six hundred thirty-eight thousand, six hundred fifty-nine".