2871999997 has 4 divisors (see below), whose sum is σ = 2886881020. Its totient is φ = 2857118976.

The previous prime is 2871999973. The next prime is 2872000037. The reversal of 2871999997 is 7999991782.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1414211236 + 1457788761 = 37606^2 + 38181^2 .

It is a cyclic number.

It is not a de Polignac number, because 2871999997 - 2⁷ = 2871999869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2871999797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7440222 + ... + 7440607.

It is an arithmetic number, because the mean of its divisors is an integer number (721720255).

Almost surely, 2^2871999997 is an apocalyptic number.

It is an amenable number.

2871999997 is a deficient number, since it is larger than the sum of its proper divisors (14881023).

2871999997 is a wasteful number, since it uses less digits than its factorization.

2871999997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14881022.

The product of its digits is 46294416, while the sum is 70.

The square root of 2871999997 is about 53591.0439999073. The cubic root of 2871999997 is about 1421.4387317396.

The spelling of 2871999997 in words is "two billion, eight hundred seventy-one million, nine hundred ninety-nine thousand, nine hundred ninety-seven".