4639631 has 2 divisors, whose sum is σ = 4639632. Its totient is φ = 4639630.

The previous prime is 4639597. The next prime is 4639633. The reversal of 4639631 is 1369364.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4639631 - 2¹⁰ = 4638607 is a prime.

It is a super-2 number, since 2×4639631² = 43052351632322, which contains 22 as substring.

Together with 4639633, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4639633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2319815 + 2319816.

It is an arithmetic number, because the mean of its divisors is an integer number (2319816).

Almost surely, 2^4639631 is an apocalyptic number.

4639631 is a deficient number, since it is larger than the sum of its proper divisors (1).

4639631 is an equidigital number, since it uses as much as digits as its factorization.

4639631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 32.

The square root of 4639631 is about 2153.9802691761. The cubic root of 4639631 is about 166.7865967910.

The spelling of 4639631 in words is "four million, six hundred thirty-nine thousand, six hundred thirty-one".