2489986979 has 8 divisors (see below), whose sum is σ = 2520135072. Its totient is φ = 2459981440.

The previous prime is 2489986973. The next prime is 2489986981. The reversal of 2489986979 is 9796899842.

2489986979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2489986979 - 2²⁴ = 2473209763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2489986973) 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, 284 + ... + 70569.

It is an arithmetic number, because the mean of its divisors is an integer number (315016884).

Almost surely, 2^2489986979 is an apocalyptic number.

2489986979 is a deficient number, since it is larger than the sum of its proper divisors (30148093).

2489986979 is a wasteful number, since it uses less digits than its factorization.

2489986979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71277.

The product of its digits is 141087744, while the sum is 71.

The square root of 2489986979 is about 49899.7693281242. The cubic root of 2489986979 is about 1355.3944157572.

The spelling of 2489986979 in words is "two billion, four hundred eighty-nine million, nine hundred eighty-six thousand, nine hundred seventy-nine".