2139050993 has 8 divisors (see below), whose sum is σ = 2326091112. Its totient is φ = 1958812416.

The previous prime is 2139050983. The next prime is 2139051041. The reversal of 2139050993 is 3990509312.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1246654864 + 892396129 = 35308^2 + 29873^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2139050993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2139050993.

It is not an unprimeable number, because it can be changed into a prime (2139050983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1699730 + ... + 1700987.

It is an arithmetic number, because the mean of its divisors is an integer number (290761389).

Almost surely, 2^2139050993 is an apocalyptic number.

It is an amenable number.

2139050993 is a deficient number, since it is larger than the sum of its proper divisors (187040119).

2139050993 is a wasteful number, since it uses less digits than its factorization.

2139050993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3400771.

The product of its (nonzero) digits is 65610, while the sum is 41.

The square root of 2139050993 is about 46249.8755998327. The cubic root of 2139050993 is about 1288.4682243196.

The spelling of 2139050993 in words is "two billion, one hundred thirty-nine million, fifty thousand, nine hundred ninety-three".