4789640 has 32 divisors (see below), whose sum is σ = 11151000. Its totient is φ = 1849344.

The previous prime is 4789639. The next prime is 4789651. The reversal of 4789640 is 469874.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3976036 + 813604 = 1994^2 + 902^2 .

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a d-powerful number, because it can be written as 4⁷ + 7³ + 8³ + 9⁶ + 6⁶ + 4¹¹ + 0 .

It is a junction number, because it is equal to n+sod(n) for n = 4789594 and 4789603.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 905 + ... + 3224.

Almost surely, 2^4789640 is an apocalyptic number.

4789640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4789640 is an abundant number, since it is smaller than the sum of its proper divisors (6361360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4789640 is a wasteful number, since it uses less digits than its factorization.

4789640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4169 (or 4165 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 4789640 is about 2188.5246171793. The cubic root of 4789640 is about 168.5650850542.

The spelling of 4789640 in words is "four million, seven hundred eighty-nine thousand, six hundred forty".