2479986894 has 128 divisors (see below), whose sum is σ = 6892646400. Its totient is φ = 574318080.

The previous prime is 2479986871. The next prime is 2479986919. The reversal of 2479986894 is 4986899742.

2479986894 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 140917 + ... + 157535.

It is an arithmetic number, because the mean of its divisors is an integer number (53848800).

Almost surely, 2^2479986894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2479986894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3446323200).

2479986894 is an abundant number, since it is smaller than the sum of its proper divisors (4412659506).

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

2479986894 is a wasteful number, since it uses less digits than its factorization.

2479986894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16678.

The product of its digits is 62705664, while the sum is 66.

The square root of 2479986894 is about 49799.4668043745. The cubic root of 2479986894 is about 1353.5775060062.

The spelling of 2479986894 in words is "two billion, four hundred seventy-nine million, nine hundred eighty-six thousand, eight hundred ninety-four".