3387439957691 has 4 divisors (see below), whose sum is σ = 3395299447584. Its totient is φ = 3379580467800.

The previous prime is 3387439957679. The next prime is 3387439957721. The reversal of 3387439957691 is 1967599347833.

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 3387439957691 - 2¹⁴ = 3387439941307 is a prime.

It is a super-2 number, since 2×3387439957691² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3387439957631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3929744300 + ... + 3929745161.

It is an arithmetic number, because the mean of its divisors is an integer number (848824861896).

Almost surely, 2^{3387439957691} is an apocalyptic number.

3387439957691 is a deficient number, since it is larger than the sum of its proper divisors (7859489893).

3387439957691 is an equidigital number, since it uses as much as digits as its factorization.

3387439957691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7859489892.

The product of its digits is 925888320, while the sum is 74.

The spelling of 3387439957691 in words is "three trillion, three hundred eighty-seven billion, four hundred thirty-nine million, nine hundred fifty-seven thousand, six hundred ninety-one".