4899978 has 48 divisors (see below), whose sum is σ = 11456640. Its totient is φ = 1507968.

The previous prime is 4899971. The next prime is 4899997. The reversal of 4899978 is 8799984.

4899978 is a `hidden beast` number, since 489 + 99 + 78 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4899971) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20383 + ... + 20621.

It is an arithmetic number, because the mean of its divisors is an integer number (238680).

Almost surely, 2^4899978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4899978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5728320).

4899978 is an abundant number, since it is smaller than the sum of its proper divisors (6556662).

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

4899978 is a wasteful number, since it uses less digits than its factorization.

4899978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331 (or 328 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 4899978 is about 2213.5893928188. The cubic root of 4899978 is about 169.8496710266.

The spelling of 4899978 in words is "four million, eight hundred ninety-nine thousand, nine hundred seventy-eight".