2039979940 has 96 divisors (see below), whose sum is σ = 4753002240. Its totient is φ = 731529216.

The previous prime is 2039979919. The next prime is 2039979943. The reversal of 2039979940 is 499799302.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2039979943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2760091 + ... + 2760829.

It is an arithmetic number, because the mean of its divisors is an integer number (49510440).

Almost surely, 2^2039979940 is an apocalyptic number.

2039979940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2039979940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2376501120).

2039979940 is an abundant number, since it is smaller than the sum of its proper divisors (2713022300).

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

2039979940 is a wasteful number, since it uses less digits than its factorization.

2039979940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141 (or 1139 counting only the distinct ones).

The product of its (nonzero) digits is 1102248, while the sum is 52.

The square root of 2039979940 is about 45166.1370940664. The cubic root of 2039979940 is about 1268.2609839721.

The spelling of 2039979940 in words is "two billion, thirty-nine million, nine hundred seventy-nine thousand, nine hundred forty".