4899840 has 176 divisors, whose sum is σ = 17686080. Its totient is φ = 1146880.

The previous prime is 4899823. The next prime is 4899841. The reversal of 4899840 is 489984.

It is a tau number, because it is divible by the number of its divisors (176).

It is a junction number, because it is equal to n+sod(n) for n = 4899792 and 4899801.

It is not an unprimeable number, because it can be changed into a prime (4899841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168946 + ... + 168974.

Almost surely, 2^4899840 is an apocalyptic number.

4899840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4899840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8843040).

4899840 is an abundant number, since it is smaller than the sum of its proper divisors (12786240).

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

4899840 is a wasteful number, since it uses less digits than its factorization.

4899840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 4899840 is about 2213.5582215067. The cubic root of 4899840 is about 169.8480764974.

The spelling of 4899840 in words is "four million, eight hundred ninety-nine thousand, eight hundred forty".