2771932987 has 4 divisors (see below), whose sum is σ = 2772662256. Its totient is φ = 2771203720.

The previous prime is 2771932937. The next prime is 2771933029. The reversal of 2771932987 is 7892391772.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2771932987 - 2¹⁹ = 2771408699 is a prime.

It is a super-2 number, since 2×2771932987² = 15367224968837484338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2771932907) 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 3 ways as a sum of consecutive naturals, for example, 358903 + ... + 366544.

It is an arithmetic number, because the mean of its divisors is an integer number (693165564).

Almost surely, 2^2771932987 is an apocalyptic number.

2771932987 is a deficient number, since it is larger than the sum of its proper divisors (729269).

2771932987 is an equidigital number, since it uses as much as digits as its factorization.

2771932987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729268.

The product of its digits is 2667168, while the sum is 55.

The square root of 2771932987 is about 52649.1499171639. The cubic root of 2771932987 is about 1404.7344790222.

It can be divided in two parts, 27719 and 32987, that added together give a palindrome (60706).

The spelling of 2771932987 in words is "two billion, seven hundred seventy-one million, nine hundred thirty-two thousand, nine hundred eighty-seven".