4690639 has 2 divisors, whose sum is σ = 4690640. Its totient is φ = 4690638.

The previous prime is 4690633. The next prime is 4690661. The reversal of 4690639 is 9360964.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4690639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4690598 and 4690607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4690633) 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, 2345319 + 2345320.

It is an arithmetic number, because the mean of its divisors is an integer number (2345320).

Almost surely, 2^4690639 is an apocalyptic number.

4690639 is a deficient number, since it is larger than the sum of its proper divisors (1).

4690639 is an equidigital number, since it uses as much as digits as its factorization.

4690639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 4690639 is about 2165.7883091383. The cubic root of 4690639 is about 167.3955865187.

It can be divided in two parts, 4690 and 639, that added together give a square (5329 = 73²).

The spelling of 4690639 in words is "four million, six hundred ninety thousand, six hundred thirty-nine".