4989915 has 72 divisors (see below), whose sum is σ = 10528128. Its totient is φ = 2177280.

The previous prime is 4989863. The next prime is 4989917. The reversal of 4989915 is 5199894.

It is not a de Polignac number, because 4989915 - 2⁶ = 4989851 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (4989917) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 68319 + ... + 68391.

It is an arithmetic number, because the mean of its divisors is an integer number (146224).

Almost surely, 2^4989915 is an apocalyptic number.

4989915 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

4989915 is an abundant number, since it is smaller than the sum of its proper divisors (5538213).

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

4989915 is a wasteful number, since it uses less digits than its factorization.

4989915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 119 counting only the distinct ones).

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

The square root of 4989915 is about 2233.8117646749. The cubic root of 4989915 is about 170.8825499017.

The spelling of 4989915 in words is "four million, nine hundred eighty-nine thousand, nine hundred fifteen".