4989999 has 8 divisors (see below), whose sum is σ = 7603840. Its totient is φ = 2851416.

The previous prime is 4989997. The next prime is 4990019. The reversal of 4989999 is 9999894.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4989999 - 2¹ = 4989997 is a prime.

It is a Duffinian number.

4989999 is a modest number, since divided by 9999 gives 498 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4989991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118789 + ... + 118830.

It is an arithmetic number, because the mean of its divisors is an integer number (950480).

Almost surely, 2^4989999 is an apocalyptic number.

4989999 is a deficient number, since it is larger than the sum of its proper divisors (2613841).

4989999 is a wasteful number, since it uses less digits than its factorization.

4989999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237629.

The product of its digits is 1889568, while the sum is 57.

The square root of 4989999 is about 2233.8305665381. The cubic root of 4989999 is about 170.8835087727.

The spelling of 4989999 in words is "four million, nine hundred eighty-nine thousand, nine hundred ninety-nine".