4989979398 has 32 divisors (see below), whose sum is σ = 10590393600. Its totient is φ = 1564039136.

The previous prime is 4989979391. The next prime is 4989979399. The reversal of 4989979398 is 8939799894.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4989979391) 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, 298293 + ... + 314576.

It is an arithmetic number, because the mean of its divisors is an integer number (330949800).

Almost surely, 2^4989979398 is an apocalyptic number.

4989979398 is an abundant number, since it is smaller than the sum of its proper divisors (5600414202).

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

4989979398 is a wasteful number, since it uses less digits than its factorization.

4989979398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612956.

The product of its digits is 317447424, while the sum is 75.

The square root of 4989979398 is about 70639.7862256108. The cubic root of 4989979398 is about 1708.8328501425.

The spelling of 4989979398 in words is "four billion, nine hundred eighty-nine million, nine hundred seventy-nine thousand, three hundred ninety-eight".