4919985 has 24 divisors (see below), whose sum is σ = 9746880. Its totient is φ = 2248992.

The previous prime is 4919983. The next prime is 4919989. The reversal of 4919985 is 5899194.

It is not a de Polignac number, because 4919985 - 2¹ = 4919983 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 4919985.

It is not an unprimeable number, because it can be changed into a prime (4919983) 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, 7495 + ... + 8124.

It is an arithmetic number, because the mean of its divisors is an integer number (406120).

Almost surely, 2^4919985 is an apocalyptic number.

4919985 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4919985 is a deficient number, since it is larger than the sum of its proper divisors (4826895).

4919985 is a wasteful number, since it uses less digits than its factorization.

4919985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15637 (or 15634 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 4919985 is about 2218.1039200182. The cubic root of 4919985 is about 170.0805270165.

It can be divided in two parts, 49199 and 85, that added together give a square (49284 = 222²).

The spelling of 4919985 in words is "four million, nine hundred nineteen thousand, nine hundred eighty-five".