2087947129 has 4 divisors (see below), whose sum is σ = 2132371584. Its totient is φ = 2043522676.

The previous prime is 2087947091. The next prime is 2087947159. The reversal of 2087947129 is 9217497802.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2087947129 - 2²³ = 2079558521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2087947159) 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 3 ways as a sum of consecutive naturals, for example, 22212157 + ... + 22212250.

It is an arithmetic number, because the mean of its divisors is an integer number (533092896).

Almost surely, 2^2087947129 is an apocalyptic number.

It is an amenable number.

2087947129 is a deficient number, since it is larger than the sum of its proper divisors (44424455).

2087947129 is an equidigital number, since it uses as much as digits as its factorization.

2087947129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44424454.

The product of its (nonzero) digits is 508032, while the sum is 49.

The square root of 2087947129 is about 45694.0601063202. The cubic root of 2087947129 is about 1278.1245175473.

The spelling of 2087947129 in words is "two billion, eighty-seven million, nine hundred forty-seven thousand, one hundred twenty-nine".