4928639 has 2 divisors, whose sum is σ = 4928640. Its totient is φ = 4928638.

The previous prime is 4928611. The next prime is 4928663. The reversal of 4928639 is 9368294.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4928639 - 2⁸ = 4928383 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 4928596 and 4928605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4927639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2464319 + 2464320.

It is an arithmetic number, because the mean of its divisors is an integer number (2464320).

Almost surely, 2^4928639 is an apocalyptic number.

4928639 is a deficient number, since it is larger than the sum of its proper divisors (1).

4928639 is an equidigital number, since it uses as much as digits as its factorization.

4928639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 41.

The square root of 4928639 is about 2220.0538281762. The cubic root of 4928639 is about 170.1801895655.

The spelling of 4928639 in words is "four million, nine hundred twenty-eight thousand, six hundred thirty-nine".