4878990 has 48 divisors (see below), whose sum is σ = 13242528. Its totient is φ = 1243968.

The previous prime is 4878977. The next prime is 4879009. The reversal of 4878990 is 998784.

4878990 is a `hidden beast` number, since 487 + 89 + 90 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 892 + ... + 3248.

It is an arithmetic number, because the mean of its divisors is an integer number (275886).

Almost surely, 2^4878990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4878990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6621264).

4878990 is an abundant number, since it is smaller than the sum of its proper divisors (8363538).

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

4878990 is a wasteful number, since it uses less digits than its factorization.

4878990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2393 (or 2390 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 4878990 is about 2208.8435888492. The cubic root of 4878990 is about 169.6068191381.

The spelling of 4878990 in words is "four million, eight hundred seventy-eight thousand, nine hundred ninety".