2139555099 has 8 divisors (see below), whose sum is σ = 3112080192. Its totient is φ = 1296700040.

The previous prime is 2139555091. The next prime is 2139555101. The reversal of 2139555099 is 9905559312.

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 2139555099 - 2³ = 2139555091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2139555091) by changing a digit.

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, 32417469 + ... + 32417534.

It is an arithmetic number, because the mean of its divisors is an integer number (389010024).

Almost surely, 2^2139555099 is an apocalyptic number.

2139555099 is a deficient number, since it is larger than the sum of its proper divisors (972525093).

2139555099 is a wasteful number, since it uses less digits than its factorization.

2139555099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64835017.

The product of its (nonzero) digits is 546750, while the sum is 48.

The square root of 2139555099 is about 46255.3250880372. The cubic root of 2139555099 is about 1288.5694333055.

The spelling of 2139555099 in words is "two billion, one hundred thirty-nine million, five hundred fifty-five thousand, ninety-nine".