3487872689 has 4 divisors (see below), whose sum is σ = 3986140224. Its totient is φ = 2989605156.

The previous prime is 3487872683. The next prime is 3487872691. The reversal of 3487872689 is 9862787843.

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 3487872689 - 2¹⁶ = 3487807153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3487872683) 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, 249133757 + ... + 249133770.

It is an arithmetic number, because the mean of its divisors is an integer number (996535056).

Almost surely, 2^3487872689 is an apocalyptic number.

It is an amenable number.

3487872689 is a deficient number, since it is larger than the sum of its proper divisors (498267535).

3487872689 is an equidigital number, since it uses as much as digits as its factorization.

3487872689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498267534.

The product of its digits is 32514048, while the sum is 62.

The square root of 3487872689 is about 59058.2144074810. The cubic root of 3487872689 is about 1516.5388538484.

The spelling of 3487872689 in words is "three billion, four hundred eighty-seven million, eight hundred seventy-two thousand, six hundred eighty-nine".