4689890 has 16 divisors (see below), whose sum is σ = 8476920. Its totient is φ = 1868160.

The previous prime is 4689871. The next prime is 4689901. The reversal of 4689890 is 989864.

It can be written as a sum of positive squares in 4 ways, for example, as 4116841 + 573049 = 2029^2 + 757^2 .

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 1976 + ... + 3644.

Almost surely, 2^4689890 is an apocalyptic number.

4689890 is a deficient number, since it is larger than the sum of its proper divisors (3787030).

4689890 is a wasteful number, since it uses less digits than its factorization.

4689890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 4689890 is about 2165.6153859815. The cubic root of 4689890 is about 167.3866761500.

The spelling of 4689890 in words is "four million, six hundred eighty-nine thousand, eight hundred ninety".