2086388329 has 3 divisors (see below), whose sum is σ = 2086434007. Its totient is φ = 2086342652.

The previous prime is 2086388221. The next prime is 2086388377. The reversal of 2086388329 is 9238836802.

The square root of 2086388329 is 45677.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 1880523225 + 205865104 = 43365^2 + 14348^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2086388329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2086388389) 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 2 ways as a sum of consecutive naturals, for example, 22839 + ... + 68515.

Almost surely, 2^2086388329 is an apocalyptic number.

2086388329 is the 45677-th square number.

2086388329 is the 22839-th centered octagonal number.

It is an amenable number.

2086388329 is a deficient number, since it is larger than the sum of its proper divisors (45678).

2086388329 is an frugal number, since it uses more digits than its factorization.

2086388329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91354 (or 45677 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 49.

The cubic root of 2086388329 is about 1277.8063682859.

Multiplying 2086388329 by its sum of digits (49), we get a square (102233028121 = 319739²).

The spelling of 2086388329 in words is "two billion, eighty-six million, three hundred eighty-eight thousand, three hundred twenty-nine".