4639970 has 16 divisors (see below), whose sum is σ = 8556408. Its totient is φ = 1810560.

The previous prime is 4639967. The next prime is 4639979. The reversal of 4639970 is 799364.

It can be written as a sum of positive squares in 4 ways, for example, as 3806401 + 833569 = 1951^2 + 913^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4639979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5249 + ... + 6068.

Almost surely, 2^4639970 is an apocalyptic number.

4639970 is a deficient number, since it is larger than the sum of its proper divisors (3916438).

4639970 is a wasteful number, since it uses less digits than its factorization.

4639970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11365.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 4639970 is about 2154.0589592674. The cubic root of 4639970 is about 166.7906588439.

Subtracting from 4639970 its reverse (799364), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 4639970 in words is "four million, six hundred thirty-nine thousand, nine hundred seventy".