2139286408 has 32 divisors (see below), whose sum is σ = 4586630400. Its totient is φ = 916348032.

The previous prime is 2139286379. The next prime is 2139286433. The reversal of 2139286408 is 8046829312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107841 + ... + 126127.

It is an arithmetic number, because the mean of its divisors is an integer number (143332200).

Almost surely, 2^2139286408 is an apocalyptic number.

2139286408 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2139286408 is an abundant number, since it is smaller than the sum of its proper divisors (2447343992).

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

2139286408 is a wasteful number, since it uses less digits than its factorization.

2139286408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20389 (or 20385 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 2139286408 is about 46252.4205636851. The cubic root of 2139286408 is about 1288.5154903925.

The spelling of 2139286408 in words is "two billion, one hundred thirty-nine million, two hundred eighty-six thousand, four hundred eight".