3427199987 has 4 divisors (see below), whose sum is σ = 3427323816. Its totient is φ = 3427076160.

The previous prime is 3427199977. The next prime is 3427200001. The reversal of 3427199987 is 7899917243.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7899917243 = 139 ⋅56833937.

It is a cyclic number.

It is not a de Polignac number, because 3427199987 - 2¹⁴ = 3427183603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3427199927) 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, 728 + ... + 82794.

It is an arithmetic number, because the mean of its divisors is an integer number (856830954).

Almost surely, 2^3427199987 is an apocalyptic number.

3427199987 is a deficient number, since it is larger than the sum of its proper divisors (123829).

3427199987 is an equidigital number, since it uses as much as digits as its factorization.

3427199987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123828.

The product of its digits is 6858432, while the sum is 59.

The square root of 3427199987 is about 58542.2922936914. The cubic root of 3427199987 is about 1507.6938008880.

The spelling of 3427199987 in words is "three billion, four hundred twenty-seven million, one hundred ninety-nine thousand, nine hundred eighty-seven".