4638629 has 2 divisors, whose sum is σ = 4638630. Its totient is φ = 4638628.

The previous prime is 4638607. The next prime is 4638631. The reversal of 4638629 is 9268364.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4622500 + 16129 = 2150^2 + 127^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4638629 is a prime.

Together with 4638631, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 4638592 and 4638601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4638659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2319314 + 2319315.

It is an arithmetic number, because the mean of its divisors is an integer number (2319315).

Almost surely, 2^4638629 is an apocalyptic number.

It is an amenable number.

4638629 is a deficient number, since it is larger than the sum of its proper divisors (1).

4638629 is an equidigital number, since it uses as much as digits as its factorization.

4638629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 38.

The square root of 4638629 is about 2153.7476639569. The cubic root of 4638629 is about 166.7745892124.

The spelling of 4638629 in words is "four million, six hundred thirty-eight thousand, six hundred twenty-nine".